Old Irish verbs that are inflected to display grammatical relations other than the main form.

• Category:Old Irish mutated verbs: Old Irish verbs whose initial consonant is mutated due to the effect of the preceding word.
• Category:Old Irish participles: Old Irish verbal forms that behave syntactically like adjectives (or sometimes adverbs), and in some languages are often used in compound conjugations and/or reduced relative clauses.

• Old Irish non-lemma forms
• Old Irish verbs
• Verb forms by language

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