watch your head
- duckWaterbird that quacks
- lowNot elevated
- ceilingRoom's upper surface
- doorwayPassage into a room
- cautionCareful attention to risk
beware · stoop · clearance · overhead · warning · bump · crouch · hazard · sign · construction · beam · lintel · attic · basement · tunnel · scaffold · hard hat · bonk
caution vs. disregard
watch your headdon't worry about it
throw caution to the wind · dive in · full speed ahead · go ahead · never mind
restriction vs. freedom of movement
watch your headall clear
Signal danger has passed
plenty of room · coast is clear · you're fine · no worries · stand up straight