Definitions

1. noun

a sudden loud crash or impact, typically made by hitting something, especially with force or violence

“The car crashed into the wall with a loud wham.”

2. verb

to hit something with force or violence

“She whammed the door shut to keep the cold air out.”

3. interjection

used to express surprise or shock, especially at a loud noise

“Oh wham! The fireworks exploded in the sky.”