List of 426 Sets of Synonyms - How they Differ - Total of 2307 Words - 421

SYNONYMS: weak, feeble, frail, fragile, infirm, decrepit, debilitated.
These adjectives mean lacking or showing a lack of strength.

Weak , the most widely applicable, implies lack of physical, mental, or spiritual strength or deficiency of will or purpose: These poor wretches were so weak they could hardly sit to their oars. Like all weak men he laid an exaggerated stress on not changing one's mind.
Feeble suggests pathetic or grievous physical or mental weakness or hopeless inadequacy: a feeble patient; a feeble intellect; a feeble effort.
Frail implies delicacy, as of constitution, or lack of ability to endure or withstand: She was a frail old woman.
What is fragile is easily broken, damaged, or destroyed: a fragile dewdrop. It was a fragile peace.
Infirm implies enfeeblement: a poor, infirm, weak, and despised old man.
Decrepit describes what is weakened, worn out, or broken down by hard use or the passage of time: childhood, manhood, and decrepit age.
Debilitated suggests a gradual impairment of energy or strength: Her already debilitated constitution is being further weakened by overwork and smoking.