What is Adjective of smile?

There isn't a single perfect adjective for "smile" because it depends on the kind of smile you want to describe. Here are some options, depending on the context:

General adjectives:

* Smiling (most direct and common)

* Cheerful

* Happy

* Joyful

* Bright

* Warm

* Friendly

More specific adjectives:

* Radiant (a very bright and shining smile)

* Beaming (a wide and very happy smile)

* Grinning (a wide, often playful smile)

* Coy (a shy or flirtatious smile)

* Mysterious (a smile that hints at hidden thoughts)

* Sad (a smile that masks sadness or pain)

* Frightened (a smile that is nervous or fearful)

Descriptive phrases:

* A smile that lit up the room

* A smile that melted your heart

* A smile that spoke volumes

The best adjective or phrase to use will depend on the specific situation and the effect you want to create.