By creeping, moving stealthily and slowly; insidiously; cunningly.

plural of creephole

A hole or retreat onto which an animal may creep, to escape notice or danger. / (figuratively) A subterfuge; an excuse.

plural of creeple

Obsolete form of cripple. / (obsolete, UK, dialect) A creeping creature; a reptile.

(archaic) second-person singular simple present form of creep

plural of creepoid

(slang) Creepy.

(slang, derogatory) A creepy person or creature.

(slang) Creepy.