Able to withstand hardship or difficult conditions; can mean physically sturdy or mentally resilient/tough.
彼はタフな選手で、最後まで走り切った。
He is a tough athlete and ran through until the end.
このスマホはタフな作りで、落としても壊れにくい。
This smartphone is built tough and doesn't break easily when dropped.
タフな状況でも諦めないことが大切だ。
It's important not to give up even in tough situations.