Fanmade Sims 4 Traits

Normal

 * Awkward: These Sims tend to be Embarrassed all the time.
 * Loves children: These Sims become Happy around Children, become Confident after Try for Baby, and can be Nice to Children.
 * Hates teens: These Sims become Angry around Teens, become Tense after doing a Friendly interaction directed at a Teen, and can be Mean to Teens.
 * Loves teens: These Sims become Happy around Teens, become Confident after doing a Friendly interaction directed at a Teen, and can be Nice to Teens.
 * Forgetful: These Sims tend to forget a lot of things and become Embarrassed when they forget something important.
 * Boring: These Sims make other Sims around them become Bored.
 * Helpful: These Sims love to help! They become Happy when they help a fellow Sim and become Sad if they haven't helped anybody for a period of time.
 * Storyteller: These Sims love to tell stories! They can also Tell Sad Stories and Tell Crazy Stories, unlike other Sims.
 * Chatterbox: These Sims have a lot to say! These Sims become Happy while chatting and become Tense when they haven't chatted with one of their fellow Sims for a period of time.

Toddler

 * Sleepy: These Toddlers require tons of sleep to become Happy.

Infant

 * Curious: These Sims are curious about the world around them. They will often follow older Sims to see what they're up to.

The Sims 4: Get Together

 * Loves to sing: These Sims love to sing, sing, sing! When at venues like Bars, Nightclubs, and Lounges, these Sims can get a burst of energy with the Get Musical interaction.

The Sims 4: Cats & Dogs

 * Allergic to cats: These Sims have a cat allergy. They might sneeze uncontrollably when they are near cats.
 * Cat hater: These Sims absolutely hate cats. They will become Tense when they are near cats.
 * Dog hater: These Sims absolutely hate dogs. They will become Tense when they are near dogs.

The Sims 4: Seasons

 * Child of spring: These Sims become Happy in spring, and love flowers.
 * Child of summer: These Sims become Happy in summer, and love swimming.
 * Child of fall: These Sims become Happy in fall, and love Harvestfest.
 * Child of winter: These Sims become Happy in winter, and love snow.

The Sims 4: Get Famous

 * Selfless: These Sims tend to care about their fellow Sims and put themselves in danger to protect their friends, but they don't care about themselves in any way. They become Happy when they protect their friends.

The Sims 4: High School Years

 * Nerd: These Sims are very smart, but their intelligence might annoy other Sims and make them Angry.
 * Socially average: These Sims are pretty good in social situations and build charisma a bit faster, but gain powerful Moodlets and Sentiments when they struggle in social situations.
 * Socially awesome: These Sims are amazing in social situations and build charisma much faster. It's impossible for them to fail in social situations.
 * Underachiever: These Sims tend to raise their skills slower and are happy being themselves, and are a little easier to get along with as friends.
 * Hates parties: These Sims tend to find parties boring and prefer to read a book in a quiet environment.

The Sims 4: Horse Ranch

 * Horse hater: These Sims have a strong hatred for Horses. They have a harder time socializing with and caring for Horses than other Sims.