Defiant
refusing to obey something or someone
Demeaning
causing someone to lose their dignity and the respect of others
Detached
not emotional
Diffident
modest or shy because of a lack of self-confidence
Diplomatic
showing an ability to deal with people politely or professionally
Disdainful
showing a lack of respect
Disheartened
to lose determination or confidence
Disparaging
to describe as unimportant or unworthy
Dispassionate
not influenced by strong emotion
Docile
to be easily taught, led, or controlled
Effusive
expressing emotion in an uncontrolled manner
Esoteric
difficult to understand
Evasive
tending to avoid commitment
Facetious
treating serious issues with deliberately inappropriate humor
Farcical
laughably ridiculous
Fanciful
over imaginative and unrealistic
Flippant
lacking the proper respect
Frivolous
lack of seriousness or sense
Gullible
easily fooled
Hypercritical
excessively critical