| forties | (n) the time of life between 40 and 50, Syn. mid-forties |
| forties | (n) the decade from 1940 to 1949, Syn. 1940s |
| fortieth | (n) position 40 in a countable series of things |
| fortieth | (adj) the ordinal number of forty in counting order, Syn. 40th |
| Forties | n. pl. See Forty. [ 1913 Webster ] |
| Fortieth | a. [ AS. feówertigo&unr_;a. See Forty. ] |
| Fortieth | n. One of forty equal parts into which one whole is divided; the quotient of a unit divided by forty; one next in order after the thirty-ninth. [ 1913 Webster ] |