A lot vs. Alot: 9 Grammatical Pitfalls
late 14c., from Old French variant, from Latin variantem (nominative varians), present participle of variare "to change" (see vary).
1848, from variant (adj.).
variant var·i·ant (vâr'ē-ənt, vār'-)adj.
Having or exhibiting variation; differing.
Tending or liable to vary; variable.
Deviating from a standard, usually by only a slight difference.