How to pronounce obnoxious

1 : odiously or disgustingly objectionable : highly offensive. 2 archaic : exposed to something unpleasant or harmful —used with to. 3 archaic : deserving of censure.

When the T and D sounds come between two other consonant sounds, many Americans will drop them. But when we add the -ly ending, it now comes between two consonants. You’ll hear a lot of native speakers say ‘exactly‘, with no T sound. Exactly, exactly.