Lacking ability for an appropriate function or office; as,
weak eyes; a weak stomach; a weak magistrate; a weak regiment, or army.

Not possessing or manifesting intellectual, logical,
moral, or political strength, vigor, etc.

Not stiff; pliant; frail; soft; as, the weak stalk of a
plant.

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.

Not able to resist external force or onset; easily subdued
or overcome; as, a weak barrier; as, a weak fortress.

Not able to sustain a great weight, pressure, or strain;
as, a weak timber; a weak rope.

Wanting physical strength.

s. güçsüz, zayıf, dayanaksız, yetersiz. Her English is weak. (Onun İngilizcesi zayıftır.)

Deficient in strength of body; feeble; infirm; sickly;
debilitated; enfeebled; exhausted.

Lacking force of utterance or sound; not sonorous; low;
small; feeble; faint.