“Ace up one's sleeve” in Japanese
Short answer
Ace up one's sleeve in Japanese is “奥の手” (okunote). Full meaning: ace up one's sleeve, trump card, last resort; secret skills, secret, mystery.
Other ways to say “Ace up one's sleeve” in Japanese
本手
honte ace up one's sleeve, trump card; basic melody (esp. on koto and shamisen); proper move (in go, shogi, etc.), appropriate move
隠し球
kakushidama hidden ball trick; ace up one's sleeve, secret weapon
切り札
kirifuda trump, trump card; ace up one's sleeve, secret weapon
おくの手
okunote ace up one's sleeve, trump card, last resort; secret skills, secret, mystery
切札
kirifuda trump, trump card; ace up one's sleeve, secret weapon
隠し玉
kakushidama hidden ball trick; ace up one's sleeve, secret weapon
隠しだま
kakushidama hidden ball trick; ace up one's sleeve, secret weapon
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