under hat 同义词
1 秘密
hugger-mugger sub-rosa close inside private dark secret pocket quiet chamber hidden underground closet confidential bye classified shady snug backstage behind-the-scenes arcane esoteric unpublished privy cryptic subterranean clandestine backdoor stealthy hermetic underhand closed-door furtive sneaking surreptitious hid unrevealed backstairs unbreathed undivulged hole-and-corner privately darkly privily under-the-counter reserve privacy confidence mystery reservation stealth secrecy mysticism arcanum by- dern on the cuff under the rose for the cuff just quietly on the q.t under cover behind closed doors in confidence among ourselves tête-à-tête interior mysterious sneak undercover backroom underhanded hush-hush under-the-table unavowed back-street huggermugger backstair secretly confidentially surreptitiously cryptically secretively unavowedly darkness confidentiality QT secretiveness re- hide on the qt in petto sub rosa in strict confidence through the back door by the back door
2 秘密地
underground privately backstage underhand privily on the cuff under the rose just quietly on the q.t under cover behind closed doors in confidence among ourselves secretly darkly confidentially surreptitiously cryptically secretively huggermugger unavowedly on the qt sub rosa in strict confidence through the back door by the back door