THIEVISH
thievish, thieving(a)
(adjective) given to thievery
Source: WordNet® 3.1
Etymology
Adjective
thievish (comparative more thievish, superlative most thievish)
Having a tendency to steal.
Having the manner of a thief; furtive; stealthy.
Source: Wiktionary
Thiev"ish, a.
1. Given to stealing; addicted to theft; as, a thievish boy, a
thievish magpie.
2. Like a thief; acting by stealth; sly; secret.
Time's thievish progress to eternity. Shak.
3. Partaking of the nature of theft; accomplished by stealing;
dishonest; as, a thievish practice.
Or with a base and biosterous sword enforce A thievish living on the
common road. Shak.
– Thiev"ish*ly, adv.
– Thiev"ish*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition