1) Badly behaved 2) Bold 3) Boldly resistant 4) Challenging 5) Characterized by defiance 6) Disobedient 7) Fictional spacecraft 8) Insubordinate 9) Intractable 10) More than uncooperative 11) Mutinous 12) Naughty 13) Noncompliant 14) Not giving in 15) Not giving in one bit 16) Obstreperous 17) Rebellious 1) Disobedient 2) Hostile 3) Insubordinate 4) Intractable 5) In-your-face 6) Naughty 7) Noncompliant 8) Obstreperous 9) Rebellious 10) Rude 11) Unwilling 12) In-your-face 
• (a.) Full of defiance; bold; insolent; as, a defiant spirit or act.
De·fi'ant adjective [ Confer French défiant , present participle of défier . See Defy .] Full of defiance; bold; insolent; as, a defiant spirit or act. « In attitude stern and defiant .» Longfellow. -- De*fi'ant*ly , 
The Boulton Paul Defiant was a British two-seater fighter aircraft of the Second World War. It was a low wing, cantilever monoplane powered by a Rolls-Royce Merlin engine. The Defiant was armed with four 0.30 inch calibre Browning machine-guns in the power operated turret which was situated behind the pilot and had a three-hundred and sixty degree ...
[adj] - boldly resisting authority or an opposing force
defiant 1. Showing a disposition to defy. 2. Manifesting a spirit of defiance. 3. Feeling distrust.
noncompliant adjective boldly resisting authority or an opposing force; `brought up to be aggressive and defiant`; `a defiant attitude`
characterized by defiance; boldly resistant or challenging: a defiant attitude.