noun

1. Something that is smooth, or that goes smoothly and easily.

2. A smoothing action.

3. A domestic animal having a smooth coat.

verb

1. To make smooth or even.

2. To make straightforward or easy.

3. To calm or palliate.

   “to smooth a person's temper”

adjective

1. Having a texture that lacks friction. Not rough.

2. Without difficulty, problems, or unexpected consequences or incidents.

   “We hope for a smooth transition to the new system.”

3. Bland; glib.

Synonyms: even, fluid

adverb

1. Smoothly.