Synonyms of the word

stealthy

• adj. Characterized by or resembling stealth or secrecy.

concealed

• v. simple past tense and past participle of conceal.

furtive

• adj. Stealthy.
• adj. Exhibiting guilty or evasive secrecy.

sneak

• n. One who sneaks; one who moves stealthily to acquire an item or information.
• n. A cheat; a con artist; a trickster.
• n. An informer; a tell-tale.
• n. (obsolete, cricket) A ball bowled so as to roll along the ground; a daisy-cutter.
• n. (US) A sneaker; a tennis shoe.
• v. (intransitive) To creep or go stealthily; to come or go while trying to avoid detection, as a person who…
• v. (transitive) To take something stealthily without permission.
• v. (transitive, dated) To hide, especially in a mean or cowardly manner.
• v. (intransitive) (informal, especially with on) To inform an authority about another's misdemeanours; to…
• adj. In advance; before release to the general public.
• adj. In a stealthy or surreptitious manner.

sneaky

• adj. Difficult to catch due to constantly outwitting the adversaries.
• adj. Dishonest; deceitful.

surreptitious

• adj. Stealthy, furtive, well hidden, covert (especially movements).