Synonyms for Third:

adj.

•after second (adjective)
tertiary.
•fractional (adjective)
fragmentary, quarter, sectional, half, semi, fractional, part, segmental.

adv.

•all (adverb)
thirdly.

n.

ba, associate degree, associate, bachelor's degree, advanced degree, Associate of Arts, baccalaureate, 21, aa, 22. And, common fraction, common denominator. fifteenth, eleventh, eighth, fiftieth, fourth, hundredth, fifth, fortieth, billionth, fourteenth. •act (noun)
third base.
•fraction (noun)
half, denominator, piece, chunk, section, part, slice, fragment, numerator, segment, portion, quarter, fraction.
•part (noun)
next but one, after the second.
•third (noun)
tertiary, fractional, 3rd, one-third, thirdly, third base, ordinal, tierce, third gear.
•third base (noun)
third base.
•trisection (noun)
Trisection.

Other synonyms:

•Other relevant words:
one-third, common fraction, tertiary, ordinal, fifth, third gear, 3rd, third base, tierce, thirdly, fourth.

Usage examples for third

1. " I don't believe in it," a third man said. – Down the Slope by James Otis

2. I then saw her for the third time only since her birth. – Seraphita by Honore de Balzac

3. " We got ahead of him," said the third – The Story of a Doctor's Telephone--Told by His Wife by Ellen M. Firebaugh