An informal hit or strike can be described with the word "whack".
The word "whack" has several uses. It often describes a forceful and sudden action that hits something or someone - like when you accidentally knock over a vase and it makes a loud whacking sound. It can also describe a strong criticism or insult, where someone gives another person a verbal whack. For example: 'I gave my friend a whack for eating the last slice of pizza!'
How common is "whack"?
Word whack is considered rare in modern English. It appears most frequently in fiction texts and less often in other writings.
Definitions
noun
The sound of a heavy strike.
The strike itself.
The stroke itself, regardless of its successful impact.
(US, slang) An attempt, a chance, a turn, a go, originally an attempt to beat someone or something.
Example: C'mon. Take a whack at it.
(originally UK cant, somewhat dated) A share, a portion, especially a full share or large portion.
(obsolete) A whack-up: a division of an amount into separate whacks, a divvying up.
(US, obsolete) A deal, an agreement.
Example: It's a whack!
(dated, disco-era drug slang) PCP, phencyclidine (as also wack).
(slang, computing, typography) The backslash, ⟨ \ ⟩.
Example: del c:\docs\readme.txt
Delete c colon whack docs whack readme dot text.
(slang) Alternative spelling of wack (“annoyingly or disappointingly bad”)