This is the 8003rd most frequent Japanese word.
太る
"太る" means "to gain weight" or "to become fat."
The word '太る' is used in the past tense '太りました', indicating the completion of gaining weight due to overeating.
最近食べ過ぎて太りました。
Recently, I have overeaten and gained weight.
The term '太る' is modified as '太りやすい', meaning 'easy to gain weight,' to describe the likelihood of the action occurring.
ポテトチップスを毎日食べると太りやすいです。
Eating potato chips every day can easily lead to weight gain.
Here, '太る' is used in its dictionary form followed by 'かもしれません', meaning 'might,' to express a possibility of weight gain due to inactivity.