非要

fēiyào
to want absolutely; to insist on (doing sth)

CEDICT

must; have to; to want absolutely; to be unable not to; left no choice but

Wiktionary

Entry Composition

1 非 fēi
  1. to not be; not
  2. wrong; incorrect
  3. non-; un-; in-; de-
  4. to reproach; to blame
  5. (coll.) to insist on; simply must
2 要 yào
  1. to want; to need; to ask for
  2. will; shall; about to
  3. need to; should
  4. if (same as 要是 yàoshi)
  5. (bound form) important