Untiring and Zealous

Untiring adjective - Showing no signs of weariness even after long hard effort.

Zealous and untiring are semantically related in vigorous topic. In some cases you can use "Zealous" instead an adjective "Untiring", when it comes to topics like diligent.

Nearby Word: untiringly

Zealous adjective - Marked by active interest and enthusiasm.

Untiring and zealous are semantically related in diligent topic. Sometimes you can use "Untiring" instead an adjective "Zealous".

Nearby Words: zeal, zealously, zealot