stealthy

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

marked by quiet and caution and secrecy;
taking pains to avoid being observed (Freq. 1)
- a furtive manner
- a sneak attack
- stealthy footsteps
- a surreptitious glance at his watch
• Syn:
furtive, sneak, sneaky, surreptitious
• Similar to:
concealed
• Derivationally related forms:
stealth, stealthiness, sneak (for: sneaky), sneakiness (for: sneaky), sneak (for: sneak), furtiveness (for: furtive)

• Từ đồng nghĩa / Synonyms:
  furtive, sneak(a), sneaky, surreptitious