un diplomatic (adjective) undiplomatic: tactless
Sinonime: awkward, blundering,
boorish,
brash, bungling,
clumsy,
crude, discourteous, gauche, gruff,
harsh,
hasty, impolite, impolitic,
imprudent,
inconsiderate, indelicate, indiscreet,
inept, injudicious,
insensitive,
maladroit,
misunderstanding,
rash,
rough*,
rude,
sharp,
stupid*,
thoughtless, uncivil, unconsiderate, unfeeling, unkind, unperceptive, unpolished, unpolitic, unsubtle, unsympathetic, untactful,
vulgar