lacking regard for the rights or feelings of others; "shockingly inconsiderate behavior"
without proper consideration or reflection; "slovenly inconsiderate reasoning"; "unconsidered words"; "prejudice is the holding of unconsidered opinions"
presumptuously arrogant; "had a witty but overweening manner"; "no idea how overweening he would be"- S.V.Benet; "getting a little uppity and needed to be slapped down"- NY Times
based on or subject to individual discretion or preference or sometimes impulse or caprice; "an arbitrary decision"; "the arbitrary rule of a dictator"; "an arbitrary penalty"; "of arbitrary size and shape"; "an arbitrary choice"; "arbitrary division of the group into halves"
without careful prior deliberation or counsel; "ill-advised efforts"; "it would be ill-advised to accept the offer"; "took the unadvised measure of going public with the accusations"
not suitable for a particular occasion etc; "noise seems inappropriate at a time of sadness"; "inappropriate shoes for a walk on the beach"; "put inappropriate pressure on them"
not in keeping with what is correct or proper; "completely inappropriate behavior"