1. (adjective) pathetically lacking in force or effectiveness

• lame

2. (adjective) lacking strength or vigor

• faint

3. (adjective) lacking bodily or muscular strength or vitality

• debile
• decrepit
• infirm
• rickety
• sapless
• weak
• weakly

4. (adjective) lacking strength

• nerveless

1. (adjective) pathetically lacking in force or effectiveness

• weak

2. (adjective) lacking strength or vigor

• weak

3. (adjective) lacking bodily or muscular strength or vitality

• frail

4. (adjective) lacking strength

• powerless

1. (adjective) pathetically lacking in force or effectiveness

• feebleness
• tenuity
• lameness

2. (adjective) lacking strength or vigor

• faintness
• feebleness
• tenuity

3. (adjective) lacking bodily or muscular strength or vitality

• debility
• debility
• debility
• feebleness
• feebleness
• feebleness
• frailness
• frailness
• frailness
• frailty
• frailty
• frailty
• infirmity
• infirmity
• infirmity
• valetudinarianism
• valetudinarianism
• valetudinarianism
• weakness

4. (adjective) lacking strength

• debility
• feebleness
• frailness
• frailty
• infirmity
• valetudinarianism