Increase and Toughen

Increase verb - To make greater in size, amount, or number.

Toughen and increase are semantically related. In some cases you can use "Toughen" instead a verb "Increase".

Nearby Words: increased, increasing, increment, increasingly, incremental

Toughen verb - To increase the ability of (as a muscle) to exert physical force.

Increase and toughen are semantically related. Sometimes you can use "Increase" instead a verb "Toughen".

Nearby Words: tough, toughness, toughening, tougher