Nunation refers to the addition of nun to a word, as either a suffix or an infix, in order to mark a specific grammatical category. For example, the Aramaic plural nominal suffix that corresponds to Hebrew ים- -īm, i.e., ין- -īn, involves nunation (whereas the Hebrew suffix involves Mimation). In a pre-biblical phase of the Hebrew verbal system it would seem that nunation had clear semantic value, but in Biblical Hebrew, its many uses remain ill understood.