"Hit clinker" is a colloquial term typically used in sports to refer to a hard-hit ball or strike. As with many idiomatic expressions, there are plenty of synonyms that can be used to convey the same idea. Examples of synonyms for "hit clinker" include "whack," "smack," "crack," "thump," and "pound." Each of these words captures the essence of a forceful impact, suggesting that the ball or object has been struck with significant power. Depending on the context, other related synonyms might include "slam," "bash," "wallop," or "smash." Regardless of which synonym is used, the goal is to convey a sense of energy and strength in the way the ball or object has been hit.