Iselreithiwr, n. a petty juryman
Iselu, v. to abase, to depress
Isg, n. that is on the surface
Isgal, n. froth, scum
Isgell, n. broth, soup, pottage
Isgwympiedydd, n. sublapsarian
Islaw, prep. underhand, below
Islinellu, v. to underscore
Isloerawl, a. sublunary
Isod, prep. below, beneath, under: ad. in a lower place