その誘惑的な提案を断るのは難しかった。
It was hard to turn down that tempting offer.
Compound of 誘惑 (ゆうわく, 'temptation, allurement') + 的 (てき, '-like, -ish'). The derivation is straightforward; the exact historical origin of 誘惑 is uncertain but is conventionally associated with the kanji meanings 'invite' and 'bewilder'.