From Wiktionary, the free dictionary
From ridire (“knight, cavalier”) + -ach.
ridireach (genitive singular masculine ridirich, comparative ridiriche)
- knightly, chivalrous
- Synonym: ridireil
- Edward Dwelly (1911) “ridireach”, in Faclair Gàidhlig gu Beurla le Dealbhan [The Illustrated Gaelic–English Dictionary][1], 10th edition, Edinburgh: Birlinn Limited, →ISBN