13 letters · 16 points in Scrabble
adjective lacking regard for the rights or feelings of others
adjective without proper consideration or reflection
originEtymology tree Proto-Indo-European *né Proto-Indo-European *n̥- Proto-Italic *n̥- Latin in-bor. Middle English in- English in- English considerate English inconsiderate From in- + considerate.
Etymology from Wiktionary, CC BY-SA 3.0