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.

Toddler
TBA

Infant
TBA

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

 * Celebrity wannabe: These Sims always want to be a celebrity, especially a four-star one. This trait must be replaced when the Sim becomes a Proper Celebrity.

The Sims 4: High School Years

 * Nerd: These Sims are very smart, but their intelligence might annoy other Sims and make them Angry.