EFF /ɛf/ Scrabble 9 Words With Friends 9 Definition verb have sexual intercourse with. — synonyms: sleep_together, roll_in_the_hay, love, make_out, make_love, sleep_with, get_laid, have_sex Examples “And he kept saying, "Effing this, effing that."” See all 2 words you can make from EFF → 3-letter words Words starting with E Words ending with F ← Unscramble different letters