Example
“She had an ace up her sleeve — a patent on the core algorithm.”
Dictionary details
Related idioms
Expressions connected by reviewed component words or topic tags.
ace in the hole
Neutral · CEFR C1
a secret advantage kept hidden until it is needed
trump card
Neutral · CEFR B2
a hidden advantage kept in reserve for the decisive moment
stay the course
Neutral · CEFR B1
to continue with a plan despite difficulties or doubt
test the waters
Neutral · CEFR B1
to try something cautiously before committing fully to it
the early bird catches the worm
Neutral · CEFR B1
Those who act promptly have the best chance of success.
the name of the game
Informal · CEFR B1
the central, most important aspect of a situation
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.