Weak

wanting in physical strength

overly diluted

(used of vowels or syllables) pronounced with little or no stress

wanting in moral strength, courage, or will

tending downward in price

deficient or lacking in some skill

lacking bodily or muscular strength or vitality

(used of verbs) having standard (or regular) inflection

not having authority, political strength, or governing power

deficient in magnitude

likely to fail under stress or pressure

deficient in intelligence or mental power