secretive

Từ điển American Heritage Dictionary 4th

se·cre·tive (sēʹkrĭ-tĭv, sĭ-krēʹtĭv)adj.
Having or marked by an inclination to secrecy; not open, forthright, or frank. See Synonyms at silent. seʹcre·tive·ly adv.seʹcre·tive·ness n.

• Từ đồng nghĩa / Synonyms:
  close, closelipped, closemouthed, tightlipped