enfeebling
adjectiveUK /ɪnˈfiːblɪŋ/
US /ɪnˈfiːblɪŋ/
Making someone or something weak.
The long illness was enfeebling, leaving him too tired to walk far.
OTHER MEANINGS
2. The act of making something weaker.
The enfeebling of the old bridge worried the engineers.
3. Causing a loss of strength or power over time.
Years of neglect had an enfeebling effect on the garden.
4. Making a person or group less able to act effectively.
Constant criticism can be enfeebling for a young team.