Synonym: 50th. Similar words: fortieth, thirtieth, twentieth, multiethnic, fifth, fifty, fifteen, fifteenth. Meaning: ['fɪftɪɪθ] 
n. position 50 in a countable series of things. adj. the ordinal number of fifty in counting order.
n. position 50 in a countable series of things. adj. the ordinal number of fifty in counting order. 31. It observed Motown's fiftieth anniversary in January with ceremonies at the Motown Historical Museum in Detroit.
32. But Congress passed the Hawaii Statehood Bill in nineteen fifty-nine. Hawaiians accepted it, and on August twenty-first, President Eisenhower declared Hawaii the fiftieth state.
33. It observed Motown's 50 th fiftieth anniversary in January ceremonies at the Motown Historical Museum in Detroit.
More similar words: fortieth, thirtieth, twentieth, multiethnic, fifth, fifty, fifteen, fifteenth, lifting, uplifting, tie to, thriftiness, shoplifting, loftily, craftily, drafting, craftiness, ahead of time, in the nick of time, tie, diet, tied, piety, quiet, tie up, tied up, gaiety, Soviet, gift, lift.