Adjective
unpronounced (not comparable)
That is not pronounced.
The letter p in the word "pterodactyl" is unpronounced.
Isis' name was originally written with the signs of a throne seat (Gardiner sign Q1, pronounced "as" or "is"), a bread loaf (Gardiner sign X1, pronounced "t" or "tj") and with an unpronounced determinative of a sitting woman. Source: Internet
The as remain unpronounced before postpositions and before other words in compounds: ઘરપર "on the house" is gharpar and not gharapar; ઘરકામ "housework" is gharkām and not gharakām. Source: Internet