fiftysomething

As nouns the difference between terms and fiftysomething

is that terms is while fiftysomething is (countable|colloquial) a person aged between 50 and 59 years.

As a numeral fiftysomething is

between fifty and sixty.

As numerals the difference between sixty and fiftysomething

is that sixty is the cardinal number occurring after fifty-nine and before sixty-one, represented in roman numerals as lx and in arabic numerals as 60 while fiftysomething is between fifty and sixty.

As a noun fiftysomething is

(countable|colloquial) a person aged between 50 and 59 years.

As numerals the difference between fifty and fiftysomething

is that fifty is the cardinal number occurring after forty-nine and before fifty-one while fiftysomething is between fifty and sixty.

As nouns the difference between fifty and fiftysomething

is that fifty is a fifty-dollar bill while fiftysomething is a person aged between 50 and 59 years.

Quinquagenarian is a synonym of fiftysomething.

As nouns the difference between quinquagenarian and fiftysomething

is that quinquagenarian is one who is between the age of 50 and 59, inclusive while fiftysomething is (countable|colloquial) a person aged between 50 and 59 years.

As an adjective quinquagenarian

is being between the age of 50 and 59, inclusive.

As a numeral fiftysomething is

between fifty and sixty.