untrustworthily
untrustingly
sleazy
unworthily
unhonourably
crooked as a barrel of snakes
unjudiciously
unpraiseworthily
unloyally
unbenevolently
unprofessionally
unpunishingly
unjudicially
uninnocently
unethically
slick
unobediently
unrespectably
unprincipledly
unauthoritatively
unindulgently
unscrupulously
unthoroughly
uncharitably
unhelpfully
unimpassionedly
unalertly
unjustly
unappreciatively
undignifiedly
unwarily
ungratefully
unjustifiably
unserviceably
unbureaucratically
unjudgementally
unitively
untimidly
unagreeably
unprudishly
unresentfully
unfeloniously
unguardedly
unassertively
unconfusedly
unrevengefully
unwarrantedly
uncarefully
unthoughtfully
disparageable