n.
Function: adjective
1 serving or fitted for use as a substitute FF1C; a substitute driver was needed for the long trip FF1E;
Synonyms: alternate, alternative, backup, surrogate
Related Words: additional, another; other, second; reserve; supplemental, supplementary, suppletory
2
Synonyms: ARTIFICIAL 2, dummy, ersatz, false, imitation, mock, sham, simulated, spurious