In a manner which provides an advantage; in an advantageous manner.

Whats the definition for advantageous?

Definition of advantageous : giving an advantage : favorable an advantageous opportunity.

What is the prefix of advantage?

Words= Prefix+ Stemadvantage= ad+ vantageallow= a\begin{align*}\cancel{d}\end{align*} + l+ lowadvertise= ad+ vertiseassist= a\begin{align*}\cancel{d}\end{align*} + s+ sist