Example
“A careless mention of her real employer nearly blew the investigator's cover.”
Dictionary details
Related idioms
Expressions connected by reviewed component words or topic tags.
break cover
CEFR B2to stop concealing one's true position or intentions and make them known
cover all bases
CEFR B2to consider and prepare for every important part, possibility, or problem so nothing is missed
blow someone's mind
CEFR B2to astonish someone with something highly surprising or impressive
body blow
CEFR B2a major setback that seriously weakens a person, organization, or effort
moment of truth
CEFR B2the decisive point when reality or the final outcome becomes clear
can of worms
CEFR B1a complicated problem that causes trouble the moment it is touched
Source methodology
Meanings, register, CEFR, and examples come from the reviewed dictionary record. Expression notes may describe a reviewed present-day word picture or a background note; they are not presented as verified etymology.