All weak synonyms

adjective weak

• flimsy — without material strength or solidity: a flimsy fabric; a flimsy structure.
• forceless — Without force.
• impuissant — lacking strength; feeble; weak.
• infirm — feeble or weak in body or health, especially because of age; ailing.
• insubstantial — not substantial or real; lacking substance: an insubstantial world of dreams.
• irresolute — not resolute; doubtful; infirm of purpose; vacillating.
• lackadaisical — without interest, vigor, or determination; listless; lethargic: a lackadaisical attempt.
• languid — lacking in vigor or vitality; slack or slow: a languid manner.
• languorous — characterized by languor; languid.
• limp — to walk with a labored, jerky movement, as when lame.
• makeshift — a temporary expedient or substitute: We used boxes as a makeshift while the kitchen chairs were being painted.
• prostrate — to cast (oneself) face down on the ground in humility, submission, or adoration.
• rickety — likely to fall or collapse; shaky: a rickety chair.
• rocky — inclined or likely to rock; tottering; shaky; unsteady.