MISCHIEVOUS is pronounced MIS CHIV ISS, not MIS CHEEVE E US.
GRIEVOUS is often misspelled and pronounced GREEVE E US. It’s GREEVE ISS.
Incidentally, looking at the subject line of this post reminds me that some people say and write PRONOUNCIATION and MISPRONOUNCIATION. True, the verb is PRONOUNCE, but for the noun forms, the O before the U is dropped.
Remember, I just teach the rules. I think they’re as crazy as you do.
The first two words are often given an extra syllable when spoken, but they don’t merit it. It’s not GREE-vee-us, nor is it mis-CHEE-vee-us.
They are pronounced GREE-viss and MIS-chiv-iss.
As to the third mispronunciation: the word is homo-JEEN-ee-iss, not huh-MOJ-en-iss. The latter seems to be the affected person’s choice. Instead of adding a syllable, as in the first two words, many people are dropping a syllable in homogeneous.
Thank you for your attention and consideration of my suggestions.