I was forced to join the plan whether I liked it or not.
He was made to take responsibility without any choice.
compulsory; unavoidable; without choice
Standard kanji form; used in the common expression 否応なく.
Search-only kanji form; not a standard spelling.
Compound of 否 (いや, 'no, refusal') and 応 (おう, 'yes, agreement'). The exact historical derivation is uncertain, but the word has been used since at least the Edo period.