"renovate inner-city housing to middle-class standards," by 1972, from gentry + -fy. Related: Gentrified, which was used from early 19c. of persons.
gentrify a row of old houses
gentrify the old center of town
gentlemanly
gentleness
gentlewoman
gently
gentrification
gentrify
gentry
*genu-
genuflect
genuflection
genuflexion