a. [ Compar. Weaker superl. Weakest. ] [ OE. weik, Icel. veikr; akin to Sw. vek, Dan. veg soft, flexible, pliant, AS. wāc weak, soft, pliant, D. week, G. weich, OHG. weih; all from the verb seen in Icel. vīkja to turn, veer, recede, AS. wīcan to yield, give way, G. weichen, OHG. wīhhan, akin to Skr. vij, and probably to E. week, L. vicis a change, turn, Gr. e'i`kein to yield, give way. √132. Cf. Week, Wink, v. i. Vicissitude. ] [ 1913 Webster ]

1. Wanting physical strength. Specifically: -- [ 1913 Webster ]

(a) Deficient in strength of body; feeble; infirm; sickly; debilitated; enfeebled; exhausted. [ 1913 Webster ]

A poor, infirm, weak, and despised old man. Shak. [ 1913 Webster ]

Weak with hunger, mad with love. Dryden. [ 1913 Webster ]

(b) Not able to sustain a great weight, pressure, or strain; as, a weak timber; a weak rope. [ 1913 Webster ]

(c) Not firmly united or adhesive; easily broken or separated into pieces; not compact; as, a weak ship. [ 1913 Webster ]

(d) Not stiff; pliant; frail; soft; as, the weak stalk of a plant. [ 1913 Webster ]

(e) Not able to resist external force or onset; easily subdued or overcome; as, a weak barrier; as, a weak fortress. [ 1913 Webster ]

(f) Lacking force of utterance or sound; not sonorous; low; small; feeble; faint. [ 1913 Webster ]

A voice not soft, weak, piping, and womanish. Ascham. [ 1913 Webster ]

(g) Not thoroughly or abundantly impregnated with the usual or required ingredients, or with stimulating and nourishing substances; of less than the usual strength; as, weak tea, broth, or liquor; a weak decoction or solution; a weak dose of medicine. [ 1913 Webster ]

(h) Lacking ability for an appropriate function or office; as, weak eyes; a weak stomach; a weak magistrate; a weak regiment, or army. [ 1913 Webster ]

2. Not possessing or manifesting intellectual, logical, moral, or political strength, vigor, etc. Specifically: - [ 1913 Webster ]

(a) Feeble of mind; wanting discernment; lacking vigor; spiritless; as, a weak king or magistrate. [ 1913 Webster ]

To think every thing disputable is a proof of a weak mind and captious temper. Beattie. [ 1913 Webster ]

Origen was never weak enough to imagine that there were two Gods. Waterland. [ 1913 Webster ]

(b) Resulting from, or indicating, lack of judgment, discernment, or firmness; unwise; hence, foolish. [ 1913 Webster ]

If evil thence ensue,
She first his weak indulgence will accuse. Milton. [ 1913 Webster ]

(c) Not having full confidence or conviction; not decided or confirmed; vacillating; wavering. [ 1913 Webster ]

Him that is weak in the faith receive ye, but not to doubtful disputations. Rom. xiv. 1. [ 1913 Webster ]

(d) Not able to withstand temptation, urgency, persuasion, etc.; easily impressed, moved, or overcome; accessible; vulnerable; as, weak resolutions; weak virtue. [ 1913 Webster ]

Guard thy heart
On this weak side, where most our nature fails. Addison. [ 1913 Webster ]

(e) Wanting in power to influence or bind; as, weak ties; a weak sense of honor of duty. [ 1913 Webster ]

(f) Not having power to convince; not supported by force of reason or truth; unsustained; as, a weak argument or case. “Convinced of his weak arguing.” Milton. [ 1913 Webster ]

A case so weak . . . hath much persisted in. Hooker. [ 1913 Webster ]

(g) Wanting in point or vigor of expression; as, a weak sentence; a weak style. [ 1913 Webster ]

(h) Not prevalent or effective, or not felt to be prevalent; not potent; feeble. “Weak prayers.” Shak. [ 1913 Webster ]

(i) Lacking in elements of political strength; not wielding or having authority or energy; deficient in the resources that are essential to a ruler or nation; as, a weak monarch; a weak government or state. [ 1913 Webster ]

I must make fair weather yet awhile,
Till Henry be more weak, and I more strong. Shak. [ 1913 Webster ]

(k) (Stock Exchange) Tending towards lower prices; as, a weak market. [ 1913 Webster ]

3. (Gram.) (a) Pertaining to, or designating, a verb which forms its preterit (imperfect) and past participle by adding to the present the suffix -ed, -d, or the variant form -t; as in the verbs abash, abashed; abate, abated; deny, denied; feel, felt. See Strong, 19 (a). (b) Pertaining to, or designating, a noun in Anglo-Saxon, etc., the stem of which ends in -n. See Strong, 19 (b). [ 1913 Webster ]

4. (Stock Exchange) Tending toward a lower price or lower prices; as, wheat is weak; a weak market. [ Webster 1913 Suppl. ]

5. (Card Playing) Lacking in good cards; deficient as to number or strength; as, a hand weak in trumps. [ Webster 1913 Suppl. ]

6. (Photog.) Lacking contrast; as, a weak negative. [ Webster 1913 Suppl. ]

☞ Weak is often used in the formation of self-explaining compounds; as, weak-eyed, weak-handed, weak-hearted, weak-minded, weak-spirited, and the like. [ 1913 Webster ]

[ 1913 Webster ]

Weak conjugation (Gram.), the conjugation of weak verbs; -- called also new conjugation, or regular conjugation, and distinguished from the old conjugation, or irregular conjugation. --
Weak declension (Anglo-Saxon Gram.), the declension of weak nouns; also, one of the declensions of adjectives. --
Weak side, the side or aspect of a person's character or disposition by which he is most easily affected or influenced; weakness; infirmity. --
weak sore or
weak ulcer (Med.), a sore covered with pale, flabby, sluggish granulations. [ 1913 Webster ]

v. t. & i. [ Cf. AS. w&unr_;can. wācian. See Weak, a. ] To make or become weak; to weaken. [ R. ] [ 1913 Webster ]

Never to seek weaking variety. Marston. [ 1913 Webster ]

v. i. To become weak or weaker; to lose strength, spirit, or determination; to become less positive or resolute; as, the patient weakened; the witness weakened on cross-examination. “His notion weakens, his discernings are lethargied.” Shak. [ 1913 Webster ]

v. t. [ imp. & p. p. Weakened p. pr. & vb. n. Weakening. ] [ 1913 Webster ]

1. To make weak; to lessen the strength of; to deprive of strength; to debilitate; to enfeeble; to enervate; as, to weaken the body or the mind; to weaken the hands of a magistrate; to weaken the force of an objection or an argument. [ 1913 Webster ]

Their hands shall be weakened from the work, that it be not done. Neh. vi. 9. [ 1913 Webster ]

2. To reduce in quality, strength, or spirit; as, to weaken tea; to weaken any solution or decoction. [ 1913 Webster ]

n. One who, or that which, weakens. “[ Fastings ] weakeners of sin.” South. [ 1913 Webster ]

n. (Zool.) Any fish of the genus Cynoscion; a squeteague; -- so called from its tender mouth. See Squeteague. [ 1913 Webster ]

Spotted weakfish (Zool.), the spotted squeteague. [ 1913 Webster ]

a. Having little courage; of feeble spirit; dispirited; faint-hearted. “Weak-hearted enemies.” Shak. [ 1913 Webster ]

a. Somewhat weak; rather weak. [ 1913 Webster ]

n. Quality or state of being weakish. [ 1913 Webster ]

a. Having weak knees; hence, easily yielding; wanting resolution. H. James. [ 1913 Webster ]