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. 
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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.