expression

/ɪkˈspɹɛʃ.ən/

#2,527 of the most-used English words

noun

1. The action of expressing thoughts, ideas, feelings, etc.
2. A particular way of phrasing an idea.
3. A colloquialism or idiom.
   "The expression "break a leg!" should not be taken literally."
4. A facial appearance usually associated with an emotion.
   "Her expression changed from joy to misery after realising her winning lottery ticket had expired."