I (letter)
I is the ninth letter of the English alphabet. Its name is pronounced just like I, eye and aye (Î, eŷe and aŷe: the accents show stress and pronunciation: see English phonemes)
Use in English
-ible, or -able (see also under a): sénsible, respónsible, póssible, éligible, suscéptible, convërtible.
In more recent formations from nouns and verbs -able is usual: êatable (cf. édible) pálatable, unbreâkable, unrepêatable, classifîable, relîable (in)dispénsable and also, to prevent -ii-, vîable. ii does, however, occur in two words, skìing and Hawàìi (*Həwàì). See under a for the suffixes -icle, -ical, -acle, and -age (*-íj).
The merely negative prefix dís- (distâsteful, disâbled, disinclîned) sounds exactly like another, dýs-, which means bad: dýsentery, dysléxia, dysfúnction.
i is redundant in friénd, pláit, sûit, frûit, jûice, slûice, crûise, brûise, recrûit, pursûit, nûisance, pàrliament, cárriage, márriage (both -ríj).