knock at the door
Threshold percussion alert
A knock at the door is the sound of someone striking a door to announce their presence and request entry.
The phrase often carries dramatic weight in narrative contexts—an unexpected knock at the door signals intrusion, news, or change: There came a knock at the door.
Interchangeable with knock on the door.
- visitorShort-term guest
- unexpected guestVisitor without invitation
- rapQuick sharp blow
- tapValve controlling liquid flow
- fistTightly closed hand
echo · opportunity · thud · wood · welcome · come in · rattle · waiting · alert · stranger · peephole · open up · arrival · who's there · summon · threshold · omen · knuckles