the coast is clear

No one's watching

The coast is clear means no one is watching or there's no danger of being caught or observed.

Originally a military phrase about enemy forces being absent from a shoreline, it now signals that it's safe to proceed with something secretive or forbidden: Wait until the coast is clear, then sneak out the back.

Related

advance · move forward · risk-free · stealthy · covert · overlooked · hidden · unseen · undetected · under the radar · capitalize · lookout · sneak out · slip away · escape route · secure · execute · initiate

Opposites
safety/danger status

the coast is cleardanger ahead

Warning of coming hazard

watch out · heads up · abort · danger zone · take cover

detection/concealment

the coast is clearcover blown

Concealed identity exposed

busted · caught red-handed · exposed · stand down · lay low

action signal

the coast is clearstand down

Withdraw from readiness

wait · don't move · stay put · fall back · retreat

Family

coast, coasts, coastal, coasting, coasted, coaster, coasters, coastline, coastlines

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Positive · Everyday, not technical · Rated G