Select the most appropriate synonym of the given word. Diligent

The most appropriate synonym of the word diligent is untiring.

Diligent means "working hard and carefully." Untiring means "never giving up or becoming tired."

The other options are not as appropriate synonyms for diligent.

• Lethargic means "lazy or lacking energy."
• Weary means "tired or exhausted."
• Inattentive means "not paying attention."