Sneaking

adjective
1.
acting in a furtive or underhand way.
2.
deceitfully underhand, as actions; contemptible.
3.
secret; not generally avowed, as a feeling, notion, suspicion, etc.
verb (used without object), sneaked or snuck, sneaking.
1.
to go in a stealthy or furtive manner; slink; skulk.
2.
to act in a furtive or underhand way.
3.
British Informal. to tattle; inform.
verb (used with object), sneaked or snuck, sneaking.
4.
to move, put, pass, etc., in a stealthy or furtive manner:
He sneaked the gun into his pocket.
5.
to do, take, or enjoy hurriedly or surreptitiously:
to sneak a cigarette.
noun
6.
a sneaking, underhand, or contemptible person.
7.
Informal. a stealthy or furtive departure.
8.
British Informal. tattletale; informer.
9.
sneaker (def 1).
10.
Informal. a sneak preview.
11.
Cards. the lead of a singleton in a suit other than the trump suit, as in whist.
adjective
1.
acting in a furtive or cowardly way
2.
secret: a sneaking desire to marry a millionaire
3.
slight but nagging (esp in the phrase a sneaking suspicion)
verb
1.
(intransitive; often foll by along, off, in, etc) to move furtively
2.
(intransitive) to behave in a cowardly or underhand manner
3.
(transitive) to bring, take, or put stealthily
4.
(intransitive) (informal, mainly Brit) to tell tales (esp in schools)
5.
(transitive) (informal) to steal
6.
(intransitive; foll by off, out, away, etc) (informal) to leave unobtrusively
noun
7.
a person who acts in an underhand or cowardly manner, esp as an informer
8.

a stealthy act or movement
(as modifier): a sneak attack

9.
(Brit, informal) an unobtrusive departure
snazz something up