This is the 4303rd most frequent Chinese word.
屈
"屈" means "to bend," "to yield," or "to submit."
In this sentence, 屈 is used in the verb 屈服 (succumb or submit), signifying yielding to external forces.
他不得不屈服于压力。
He had to succumb to pressure.
Here, 屈 means bending or curving, as it is used in the compound 屈膝 (curtsy, literally 'bend knee').
她的屈膝动作非常优雅。
Her curtsy action is very graceful.
In this usage, 屈 conveys lowering or suppressing one's own stance or status, as in 屈己 (humble oneself).