An emphatic rejection is a strong refusal of something, and the crossword solutions VETO (4 letters), NONEVER (7 letters), FATCHANCE (9 letters) and NOYOUDONT (9 letters) all reflect this sentiment. VETO is a Latin word meaning 'I forbid', while NONEVER implies that something will never happen. FATCHANCE and NOYOUDONT are both slang terms used to express disbelief or disagreement. All of these words together convey a clear message of refusal and disapproval.