express oneselfCOMMUNICATE ONE'S THOUGHTS/OPINIONS/VIEWS, put thoughts into words, speak one's mind, say what's on one's mind
[TahlilGaran] Dictionary of Contemporary English ▲
express oneself v. phr. To say what you think or feel; put your thoughts or feelings into words by speaking or writing.
The boy expressed himself well in debate. The mayor expressed himself as opposed to any borrowing. [TahlilGaran] English Idioms Dictionary ▲