The Sims 4: all personality traits (full list, effects)

In The Sims 4, every adult Sim carries three personality traits chosen during creation in Create A Sim, plus a fourth bonus trait tied to their aspiration. These traits aren't just cosmetic labels: they dictate the emotions that wash over your Sim, the social interactions available to them, how fast they level up skills, and even which objects they enjoy. In short, choosing your traits well means deciding in advance what kind of gameplay you're going to experience.

This guide runs through the four official trait categories, the standout traits from the base game and major packs, the traits specific to children and toddlers, then the best combos for shaping your playthrough. We'll wrap up with the official cheat code for changing traits without going back through CAS.

What is a personality trait in The Sims 4?

A trait is a permanent characteristic that lastingly shapes your Sim's behavior. A Cheerful Sim will regularly gain a random Happy mood, while a Gloomy Sim sinks into sadness for no apparent reason and paints better in that state of mind. Traits also interact with one another: two Sims with opposing traits (for example Romantic and Cold-Hearted) will find some social interactions blocked or tense.

• Adult / Young Adult / Elder: 3 chosen traits + 1 bonus aspiration trait, so 4 active traits.
• Teen: 2 traits.
• Child: 1 trait, from a dedicated list for children.
• Toddler: 1 trait from a list of 7 specific options.
• Infant: 1 infant trait since the baby overhaul.

Some traits are mutually exclusive (you can't be both Bookworm and Geek, nor Good and Evil). The game automatically prevents you from creating impossible combinations.

The four trait categories

The game sorts traits into four broad families, each tackling a different facet of personality:

• Emotional: the Sim's dominant emotions and their relationship to inspiration or anger.
• Hobby (formerly known as "Passion" in earlier versions): their interests and how quickly they progress in certain skills.
• Lifestyle: their day-to-day habits, cleanliness, diet, sleep schedule.
• Social: how they approach others, their loyalty, jealousy, or need for solitude.

Tip: avoid loading up a Sim with traits from just one category. Mixing an emotional trait, a hobby trait, and a social trait always produces Sims who are more interesting to play.

Emotional traits: the engine of moods

These traits are at the heart of the emotion system, which remains The Sims 4's signature mechanic. They trigger random moodlets and unlock special social interactions.

• Active: gains energy from exercising, hates sitting still.
• Ambitious: big mood boost from a promotion, plunges into anger if their career stalls.
• Creative: regular Inspired moodlets, can share creative ideas in social interactions.
• Cheerful: random Happy moodlets, increased resistance to negative emotions.
• Genius: Focused moodlets, learns mental skills faster.
• Mean: quickly turns Angry, unlocks aggressive interactions.
• Gloomy: plunges into Sad for no reason, but paints melancholic masterpieces.
• Romantic: regular Flirty moodlets, advantage in romantic interactions.
• Self-Assured: starts days Confident, immune to certain low moods.
• Erratic: switches between Inspired and Focused, perfect for wacky scientists.

Aspiration-related traits: the Sim's callings

The Hobby category determines what your Sim loves doing in their free time. It has a very direct influence on which skills they level up the fastest.

• Art Lover: paintings and sculptures give them Inspired moodlets, they appreciate a well-decorated room.
• Bookworm: reads faster, can buy books and gains a moodlet from visiting a library.
• Foodie: fully enjoys refined meals, learns cooking faster.
• Geek: passionate about video games, comics, and collections, levels up the Video Gaming skill at top speed.
• Music Lover: Happy moodlet whenever they play or listen to music.
• Outdoorsy: gains a moodlet from being outside, feels stifled if they stay indoors.
• Perfectionist: produces higher-quality creations (art, handiness, cooking) but more slowly.
• Materialistic (City Living): gains positive moodlets from owning valuable items, negative ones from staying in a shabby setting.

Lifestyle traits: everyday habits

This category governs everything the Sim does throughout the day without being prompted: tidying up, eating, sleeping, going out. This is also where the dietary traits added by expansion packs are found.

• Lazy: hates exercising and doing chores, loves passive activities.
• Neat: cleans spontaneously, gains a moodlet when the house is spotless.
• Slob: leaves belongings lying around, ignores dirty dishes.
• Childish: can play with children's toys even as an adult, enjoys the company of children.
• Goofball: trips, breaks objects, but amuses everyone.
• Glutton: devours enormous portions, gets the Disgusted moodlet if unable to get seconds.
• Clumsy: fails physical interactions but finds it funny.
• Squeamish: feels sick around dirt, spoiled food, or bodily fluids.
• Vegetarian (City Living): refuses meat, becomes ill if eating it.
• Urban Chic (City Living): comfortable in apartments, gains moodlets from city smells and sounds.
• Plant Lover (Eco Lifestyle): Happy moodlet near vegetation, more efficient at gardening.

Social traits: relating to others

These traits govern how your Sim forms bonds, argues, and lives in a group. They are especially important if you're playing a large family or aiming for a political or celebrity career.

• Good: gains a moodlet when helping others, resists becoming mean.
• Evil: gains a Happy moodlet from being cruel to others.
• Outgoing: positive moodlet when chatting, mood drops when isolated.
• Loner: stressed by prolonged presence of other Sims, Tense moodlet in crowds.
• Snob: gains a Confident moodlet when around other snobs or wearing luxury outfits.
• Jealous: reacts very badly when their partner flirts, regardless of the context.
• Family-Oriented: Happy moodlet near family, Sad moodlet away from them.
• Hates Children: any interaction with a child triggers stress.
• Commitment Issues: doesn't want to get married, reacts badly to serious proposals.
• Paranoid: suspects other Sims even when they're friendly, unlocks defensive interactions.

A Loner Sim paired with the Genius trait becomes a formidable scientific hermit, perfect for tackling the Science or Astronaut careers.

Traits added by packs and occult creatures

Each expansion adds its own batch of themed traits. They mainly enrich occult creatures like vampires or spellcasters, who have their own power trees rather than standard traits.

• Aloof (City Living): unlike the Romantic, rejects public romantic advances.
• Animal Lover (Cats & Dogs): gains a moodlet in the presence of a dog or cat.
• Fit (Get Together): physical fitness is maintained longer.
• Adventurous (Jungle Adventure): positive moodlet while exploring, resists jungle dangers.
• Insomniac: linked to vampires or obtained via aspiration, barely sleeps anymore.
• Eco Conscious (Eco Lifestyle): gets annoyed by pollution, feels better in green areas.

Traits by age: babies, toddlers, children, teens

Young Sims have dedicated lists, shorter but with a real impact on their development.

• Babies: an infant trait (Calm, Sensitive, Curious, Independent, or Fussy) assigned since the baby overhaul.
• Toddlers: one trait among Angelic, Charmer, Curious, Silly, Wild, Independent, and Inquisitive.
• Children: a single trait to choose from Creative, Curious, Social Butterfly, Sunny.
• Teens: 2 full traits chosen from the same categories as adults.

Reward traits and aspiration traits

By completing an aspiration, your Sim gains a unique bonus trait: for example Essence of Flavor, Self-Assured, Vigilant, or Genial. These traits don't replace the three initial traits, they're added to them. The rewards store also lets you buy other traits with satisfaction points, such as Steel Bladder, Never Weary, or Whim Wrangler. A Sim can thus accumulate five to seven active traits over the long term.

Changing traits mid-game (cheat code)

Regret a trait? No need to recreate your Sim. Open the console with Ctrl + Shift + C, type testingcheats true, then use the official code:

• traits.equip_trait TraitName to add a trait (example: traits.equip_trait Creative).
• traits.remove_trait TraitName to remove one.
• Trait names are in English in the code (Creative, Cheerful, Genius, Evil, Snob, etc.).

Find the complete list of identifiers in our full guide to Sims 4 cheat codes, where we also cover money, skills, and debug mode.

Little tip: aspiration reward traits can't be removed via the classic remove_trait, you need to use the command traits.remove_trait trait_HotHeaded with the trait_ prefix for some of them.

The best trait combos for your goal

The real fun of The Sims 4 comes from synergies between traits. Here are five combos that have proven themselves with the French-speaking community.

• The art master: Creative + Art Lover + Perfectionist. Paintings reach masterpiece level very quickly, ideal for the Painter career.
• The seducer: Charismatic + Outgoing + Cheerful. Your romantic interactions almost never fail, perfect for the race to ten soulmates.
• The gifted hermit: Loner + Genius + Bookworm. No social interruptions, Focused moodlets aplenty, lightning-fast growth of intellectual skills.
• The family pillar: Family-Oriented + Cheerful + Good Sense of Humor. Children grow up happy, family bonds rise quickly and parenting tasks bring enjoyment.
• The gentle chaos: Erratic + Goofball + Mean. Ideal for a sandbox playthrough, this Sim breaks the routine and causes unlikely situations at every opportunity.

To go further in The Sims 4

Personality traits interact with many other systems in the game. Explore the rest of our Sims 4 coverage: Create a Sim mode, aspirations, cheat codes, skills, money, building, and occult creatures. When well mastered, traits turn a simulation into an interactive novel. Mix categories, test contradictory combinations and let your Sims surprise you: that's when The Sims 4 becomes unforgettable.