大敵(たいてき) たいてき noun great enemy; formidable foe; nemesis 1. great enemy; formidable foe; archenemy A powerful enemy or opponent. Very often used figuratively for anything that poses a serious threat or obstacle to a goal or condition. 油断(ゆだん)は大敵(たいてき)だ。🔊 Carelessness is your worst enemy. 乾燥(かんそう)は肌(はだ)の大敵(たいてき)だ。🔊 Dryness is the enemy of the skin. ダイエット中(ちゅう)の人(ひと)にとって、甘(あま)いものは大敵(たいてき)だ。🔊 For someone on a diet, sweets are the great enemy. Often used figuratively: not a literal foe, but anything that seriously threatens a goal or condition.Common collocations油断(ゆだん)は大敵(たいてき): carelessness is your worst enemy (a common saying)肌(はだ)の大敵(たいてき): the enemy of healthy skin健康(けんこう)の大敵(たいてき): a threat to one's healthSimilar words強敵(きょうてき): tough opponent — a strong rival, usually in a contest or fight天敵(てんてき): natural enemy — a predator in nature, or figuratively someone one can never beat Related Words Compare: 強敵(きょうてき) (tough opponent) Compare: 天敵(てんてき) (natural enemy) general Added 2026.5.27 12:08 · Revised 2026.9.2 13:02 28000/28200_taiteki