Wicked, false.

Lacking integrity or moral rectitude; characterized by this; not acting in accordance with what is morally right or just; wicked, sinful…

That practises or is given to theft or extortion; thieving; dishonest. Obsolete.

Dishonest (in respect of dealings with others). Of persons.

Of persons: shifty, roguish. Obsolete.

Of an action, practice, etc.: dishonest, unfair; underhand; = sinister, adj. 3. Obsolete.

attributive. Such as is used in a horse-fair: dishonest, equivocating.

(under-, prefix1 affix 5(c).)

Of actions, etc.: Discreditable as being at variance with straightforward or honourable dealing, underhand; now, fraudulent, thievish, knavish.

U.S. slang. Dishonest, faithless. Obsolete.

slang. Dishonest; dishonestly come by. (Opposed to square or straight.) Cf. crooked, adj. 3b, and cross, n. 29.

Australian and New Zealand. Dishonest, unscrupulous, ‘crooked’.

figurative (cf. crooked, adj. 3). In various slang uses. Dishonest, ‘crooked’, criminal. Also as n. originally U.S.

One who flies by night; one addicted to nocturnal excursions (see also quot. 1796. Also slang, one who defrauds his landlord or creditors by…

Pertaining to or characteristic of a crook (crook, n. 13) or crooked behaviour, dealings, etc.

‘A lawyer who practises in an unprofessional or tricky manner; especially, one who haunts the prisons and lower courts to prey on petty criminals…

Unreliable, dishonest, ‘crooked’. Hence as n., one engaged in irregular or illegal business activities.