moisir

Etymology
.

The oi is unusual, as Latin ū generally yields /y/ (hence one might have expected ) but cf. ,, < Latin , ,. The final -ir < Latin on the other hand is regular and results from the palatalization of the preceding -c- to *[d͡zʲ], as in, ,  < Latin , ,.

Verb

 * 1)  (to cause) to go mouldy, to moulder
 * 2)  to hang around, to gather dust