Appendix:Old Irish class B IV present verbs

Old Irish class B IV verbs (Strachan's A2; McCone's S3 with e vocalism) are derived from Proto-Celtic verbs ending in, from Proto-Indo-European athematic verbs with a nasal infix before a laryngeal (singular , plural ). They correspond to Ancient Greek verbs ending in and to Sanskrit class 9 verbs (e.g., which corresponds exactly to ). The stem-final n is always non-palatalized, and exists only in the present stem; there is no n in the future, subjunctive, or preterite stems of these verbs.

The inflection is almost identical to that of class B I, subtype S1c ( type) except that the n remains nonpalatalized even when word-final and B IV shares the first-person singular absolute and conjunct -aim and the second-person singular conjunct -ai with the weak verbs.

Basic pattern
A sample verb of this subclass is. The endings are as follows (note that several of the endings are delenited after the root-final n):