weak

詞型變化：

形容詞比較級:weaker 最高級:weakest 英文字典

詞意辨析：

weak, feeble, frail, fragile

這些形容詞均有“虛弱的，乏力的”之意。
weak: 普通用詞，指缺乏應有的力量，可用於身體、意志或精神。
feeble: 指身體衰弱無力，精力幾乎耗盡，含令人憐憫的意味。
frail: 多指因經常生病而身體纖弱。
fragile: 可與frail換用，但語氣強，側重脆弱，指人容易生病，指物容易破碎。英文字典

例句：

1. The small weak child became the scorn of the class.
   這個瘦小軟弱的孩子成為全班嘲笑的對象。
2. Your argument is too weak to convince me.
   你的論點太薄弱了，說服不了我。

英文解釋：

形容詞 weak:

1. having little physical or spiritual strength
2. overly diluted; thin and insipid
   同義詞：watery, washy
3. used of vowels or syllables; pronounced with little or no stress
   同義詞：unaccented, light
4. having the attributes of man as opposed to e.g. divine beings
   同義詞：fallible, frail, imperfect
5. tending downward in price
6. deficient or lacking in some skill
7. lacking physical strength or vitality
   同義詞：decrepit, debile, feeble, infirm, rickety, sapless, weakly
8. (used of verbs) having standard (or regular) inflection
9. not having authority, political strength, or governing power
10. deficient in magnitude; barely perceptible; lacking clarity or brightness or loudness etc
    同義詞：faint
11. likely to fail under stress or pressure
12. deficient in intelligence or mental power