Crack and Hit upon

Crack verb - To break suddenly with an explosive sound.

Hit upon and crack are semantically related In some cases you can use "Hit upon" instead a verb "Crack".

Nearby Words: cracked, cracking, crackle, cracker, crackled

Hit upon verb - To come upon unexpectedly or by chance.

Crack and hit upon are semantically related in reveal topic. Sometimes you can use "Crack" instead a verb "Hit upon", if it concerns topics such as answer.