Origin: 1570–80; <
Latin rīvālis orig., one who uses a stream in common with another, equivalent to
rīv(
us) stream +
-ālis -al1 Related formsri·val·less, adjective
non·ri·val, noun, adjective
out·ri·val, verb (used with object), out·ri·valed, out·ri·val·ing or (especially British) out·ri·valled, out·ri·val·ling.
un·ri·val·ing, adjective
un·ri·val·ling, adjective
Synonyms 1. contestant, emulator, antagonist.
See opponent. 4. competitive, opposed.
5. oppose.
7. match, emulate.
Antonyms
1. ally.