Strong and Untiring

Strong adjective - Having muscles capable of exerting great physical force.

Untiring and strong are semantically related In some cases you can use "Untiring" instead an adjective "Strong".

Nearby Word: strongly

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

Strong and untiring are semantically related in determined topic. Sometimes you can use "Strong" instead an adjective "Untiring", if it concerns topics such as vigorous.

Nearby Word: untiringly