secretive Synonyms

furtive sly closelipped close closemouthed tightlipped not talkative taciturn thievish tongue-tied underhand unsociable surrey surreptitious subreptitious stealthy stealthful soft-spoken sneaky sneaking skulking withdrawn unaired back channel clamming up close-lipped unforthcoming unemphatic top secret undercover hush-hush uncommunicative tight-lipped nongregarious cagy cagey lacrimatory under-the-table zipped silent shifty incommunicative impenetrable holocryptic hidden evasive enigmatic discreet diffident dern