75th

Three-quarters century mark

Seventy-fifth in a sequence, or one of seventy-five equal parts.

Ordinal numbers like this typically mark anniversaries, rankings, or percentiles: the 75th anniversary of the armistice, ranked 75th in the world, scoring in the 75th percentile.

anniversary

diamond jubilee

Sixtieth anniversary milestone

celebration · milestone · jubilee · gala · banquet · ceremony · reception · tribute · remembrance · memorial

ordinal

three-quarters

Seventy-five percent portion

position · placement · order · succession · series · listing

percentile

ranking

Ordered position assignment

benchmark · threshold · cutoff · standing · placement · scoring · assessment · evaluation · measurement · comparison

Opposites
ordinal vs. cardinal number type

75th75

Number after seventy-four

seventy-five · cardinal number · cardinal

position in sequence

75th1st

Earliest in order

first · 2nd · second · last · initial

Phrases
Family

fifth

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G