First and Sooner

First adverb - As a substitute.

Sooner is a synonym for first in time topic. In some cases you can use "Sooner" instead an adverb "First", when it comes to topics like before, in preference.

Nearby Word: firstly

Sooner noun - A native or resident of Oklahoma.

First is a synonym for sooner in time topic. You can use "First" instead an adverb "Sooner", if it concerns topics such as before.