Short Definition: grace, favor, kindness
Definition: (a) grace, as a gift or blessing brought to man by Jesus Christ, (b) favor, (c) gratitude, thanks, (d) a favor, kindness.
From Strong's... no "unmerited" there
Charitos from charis To indue with special honor make accepted.
The important part is tha God’s grace is unmerited...the unmerited part comes from the fact that it is by grace we are saved not by the law or works.