Alt. of I-
A prefix of obscure meaning, originally used with verbs, adverbs,
adjectives, nouns, and pronouns. In the Middle English period, it was
little employed except with verbs, being chiefly used with past
participles, though occasionally with the infinitive Ycleped, or
yclept, is perhaps the only word not entirely obsolete which shows this
use.
[字首]表过去分词之义