What is the opposite of harsh?

The opposite of "harsh" depends on the context in which it's used. Here are some possibilities:

For a physical sensation:

* Gentle

* Soft

* Mild

* Soothing

* Pleasant

For a tone or manner:

* Kind

* Compassionate

* Understanding

* Sympathetic

* Gracious

* Courteous

* Polite

For a criticism or judgment:

* Lenient

* Forgiving

* Merciful

* Understanding

* Fair

* Just

For a physical environment:

* Serene

* Peaceful

* Tranquil

* Calm

* Comfortable

For a sound:

* Melodic

* Sweet

* Pleasant

* Soft

For a color:

* Subtle

* Muted

* Pale

* Soft

It's best to consider the specific situation and choose the most appropriate opposite word.