Appendix:Old Irish class B III present verbs

Old Irish class B III verbs (McCone's S1d) are inflected just like class B I, but the present stem always ends in ng, and the n disappears in the other stems. (There is one verb whose stem ends in nd, namely .) These verbs are derived from Proto-Indo-European verbs with the nasal infix. They correspond to Latin verbs like (perfect, past participle ) and Sanskrit class 7 verbs like  (perfect , past participle ).

There are apparently no deponent verbs in this class.

Because of a sound change in Proto-Celtic, the root vowel in this class is i rather than e when the following consonant cluster is palatalized, e.g.,. However, most verbs in this class actually have the root vowel o (e.g. ) and often show a lack of palatalization of the stem-final consonant cluster (e.g. ).

See Category:Old Irish class B III present verbs for a list of verbs belonging to this class.

Basic pattern
The basic pattern is shown by. The endings are as follows:

An example of a verb with depalatalization is, in which the ng cluster is depalatalized whenever a vowel follows:

In a few cases, forms without n are found when the stem vowel is unstressed, e.g. and  from  or  from.