We have no meanings for "quondam rival" in our records yet.
1 The sonnet to the Earl of Nottingham, the famous admiral and quondam rival of Sir Walter Raleigh, is more interesting:-
2 She impudently seated herself at the table with them, sending a questioning glance at the handsome companion of her quondam rival .
3 "It'll be b'ilin' in about eight minutes," replied my quondam rival , with a boo-hoo of vulgar laughter.
4 Here our quondam rivals have made the splendid harbour of Dakar, whose jetties accommodate 180,000 tons of shipping at the same time.
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