adjective. Acting in a stealthy, furtive way.

adjective. Unavowed; secret.

adjective. Gradually growing or persistent.

Pertaining to or worthy of a sneak: acting like or characteristic of a sneak; mean; servile; crouching.

Secret or clandestine, and somewhat discreditable; underhand; hence, in a less reprehensible sense, unavowed; not openly or frankly declared.

adjective. Marked by cowardly concealment; deficient in openness and courage; underhand; mean; crouching.

verb. Present participle of sneak.

adjective. not openly expressed

"If you don't believe it, explain to me what you call sneaking into a public area of citizens who are completely unguarded, with a bomb strapped to yourself, and detonating that bomb with the intent to kill and impose fear upon those people?"

abject  mean  

concealed  

creaking  critiquing  eking  freaking  leaking  

all fours  back-door  backstairs  clandestine  covert  

sneak