Devoid of might or strength; weak, feeble; powerless, impotent.

Infirm, weak, unfit for or incapable of exertion. Also absol.

Feeble, weak, impotent; = unwieldy, adj. 1.

Faded, feeble, languishing, withered. Obsolete.

Weak. Also, of a leaden or pale colour; pale, wan.

Deficient in bodily vigour through age, sickness, privation, etc.; wanting in strength of the vital functions of the body; debilitated.

Wanting in strength or vigour. Of persons or animals, their faculties or condition; also (rarely) of material agents: Weak, feeble; sickly, out of…

Ailing or indisposed; in a poor state of health; not robust or strong.

Of persons, the body, etc.: Lacking strength; weak, impotent; feeble, infirm. Also const. with prepositions, as for, of, to (with infinitive). Obs…

Physically weak; without bodily strength; unable to use one's limbs; helpless, decrepit.

Of a person, etc.: having a weak or fragile constitution, not strong or robust; highly susceptible or vulnerable to injury, sickness, or disease…

Lacking bodily strength or vigour; poorly nourished, weak, fragile; (of physical condition) poor, bad.

= unmighty, adj. 1a.

Of a person: lacking in physical strength or energy; not vigorous or hearty; unhealthy; weak, feeble. Also (now chiefly): characterized by or…

brought to a low or unfortunate condition (see phrases 4); reduced to a state of distress or weakness.

Of persons: Having little strength, feeble, sickly. Scottish and dialect.

Decayed, worn out. Chiefly, of a person: Impaired in health or vigour; infirm.

Of persons: Wasted, enfeebled, or exhausted by toil, exposure, age, anxiety, or ill-health; showing signs of such enfeeblement. (Cf. care-worn n. at…

Of persons: Infirm, feeble.

Faint, sickly, languid. In later use chiefly: Inclined to swoon.

Similative phrases in which weak may have any of various meanings. (See also sense A. 5a.)

Weak, feeble, suffering from debility.

= flue, adj.2

Weak, sickly, delicate; poorly, unwell.

That falters; in senses of the verb. of a person, the limbs, etc.

Pining; ailing, sickly; weak.

Weak, feeble; esp. physically weak, lacking bodily strength. Obsolete.

Enfeebled; feeble.

Weak, wanting in tone.

Lacking in physical ability or strength; incapable of much bodily exertion; weak, feeble. In later use Scottish.

Of life, growth, etc.

Not endowed with strength or vigour.

weak, pining, puny; figurative trifling, petty.

Of persons, with reference to physical condition: Not strong and healthy; physically weak or feeble, esp. through age; hence frequently old (or aged)…

Enfeebled; reduced to debility.

figurative. Worn out, decrepit, impotent.

Of a person: Lacking strength or stamina; weak, feeble, insipid; exhausted, washed-out; poor, mean, worthless. Now rare or Obsolete.

Scottish and English regional (northern). Sickly, ailing, in poor health; weak or feeble due to illness or infirmity. Now rare.

Weak, tender, sickly, delicate.

dialect. In delicate health, weakly, frail.

Wanting health or strength; weak, infirm, invalid.

Languishing, suffering from languor.

= valetudinary, adj. n.

Given to puling; whining; sickly.

Not flourishing (in physical condition).

Scottish. Listless, dispirited; in poor condition.

figurative. Feeble or poor in constitution, condition, or aspect; weakly, sickly, ‘washed-out’. Now rare or Obsolete.

Wanting in bodily strength or physical power.

= valetudinary, adj.

Loose (in the bowels); relaxed, weak. Cf. lash, adj. 2.

Physically weak or sickly; squeamish.

Sickly, weak, delicate; defective in some respect; (esp. of a lamb or a child) undersized, stunted in growth.

Delicate, feeble, weak; sickly, in poor or delicate health.

Of, pertaining to, or characterized by asthenia; weak, debilitated; weakening.

Pathology. Wanting tone; characterized by want of tone or nervous elasticity in the system.

Feeble, frail.

Medicine. Originally: resulting in or characterized by weakness or debility (cf. adynamia, n.); spec. designating fevers, esp. typhus and…

With adverb. (See also worn-out, adj.) in senses 1 2 above.

Inclined to totter; somewhat tottery.

= asthenic, adj.

figurative and in figurative contexts. In a state of physical exhaustion or complete weakness; unable to rise or exert oneself; debilitated. Now…

Worn out, incapacitated, rendered useless, as with continuous hard work, age, or excess; no longer competent or effective.

Weak, feeble; unsteady, shaky; = wankly, adj.

Characterized by creaking, apt to creak; transferred that creaks under a slight strain, crazy, frail.

slang. Weakened in a fight, so as to stagger; hence, gen. shaky, tottering, unsteady.

Chiefly U.S. regional (esp. southern and south Midland). In poor health; ailing; sickly.

Originally: †weakened, diminished, deprived of strength (obsolete). Later: that has become an imbecile; mentally deficient or retarded.

Ramshackle; unsteady, shaky.

Having no muscles; lacking muscle. Also figurative.

colloquial. Cf. weed, n.1 9. With reference to a person's physique: tall and thin, esp. extremely or unhealthily so; lanky and lacking in physical…

Given to tottering; shaky; unsteady.

That is a crock; broken-down, physically enfeebled.

Shaky, unsteady; feeble, effeminate.

Esp. of a building or vehicle: loose and shaky, as if ready to fall to pieces; rickety, tumbledown; in a state of severe disrepair.

Shaking, trembling, jittery; in a state of nervous agitation; = twittery, adj.2

Shaking, trembling, jittery; in a state of nervous agitation. Also: of a nervous or sensitive disposition. Also figurative.

Of a person: shaky, groggy; unstable. Of a thing: faulty, unsound; unreliable.

In the sense of string, v. 3. strung out: weak or ill, esp. as a result of drug addiction; hence, addicted to, using, or ‘high’ on drugs. slang…