| Main Entry: | ace in the hole |
| Part of Speech: | noun |
| Definition: | hidden advantage |
Synonyms: |
ace up one's sleeve, card up one's sleeve, card up one's sleeve, decisive argument, decisive resource, reserve, secret advantage, secret weapon, sure advantage, trump card |
| Main Entry: | trump card |
| Part of Speech: | noun |
| Definition: | key advantage |
Synonyms: |
ace in the hole, ace up one's sleeve, card up one's sleeve, key resource, leg up, secret weapon, trump, upper hand, whip hand |