round out
Make more whole
Round out means to complete or bring to a satisfying fullness.
You round out a meal with dessert, round out a portfolio with diverse investments, or round out a team by adding the skills it lacks: A veteran point guard rounded out their roster.
The phrase suggests filling in what's missing to make something whole.
Round out can also mean to become fuller in shape: His face rounded out as he aged.
Lacking nothing, fully done
cap off · fill in · supplement · complement · top off · culminate · crown · clinch
complete
Lacking nothing, fully done
wrap up · cap off · fill in · supplement · complement · top off · culminate · crown · clinch · seal
develop
Cause gradual growth
hone · improve · perfect · cultivate · enrich · elaborate · shape · sharpen · deepen · fortify
broaden
Expand in scope
expand · augment · enlarge · amplify · add to · build upon · supplement · bulk up · beef up · shore up
round outdiminish
To make smaller
reduce · deplete · gut · strip down · hollow out
round, around, ground, out, surround, rounded, surrounded, rounds, surroundings