I am very A-shuh-MED.
Niche – Nitch
Mature – Muh-chur
Cache – “Cash” if it’s a place where something is stored. “Cash-ay” if it is synonymous with high status. (wait, is that spelled the same? Now I’m not sure)
Adirondacks – adder-ON-dax
Fetish – feddish
Cthulhu – Ka-thoo-loo
Et cetera – Et Sedder-ah
February – Feb-ROO-airy (I hate this word. Both ways make me cringe)
Sherbet – sher-bet. Fixed this when I was about 13.
CARIBBEAN: Kuh-RIB-bee-un as a place, but I used Care-uh-BEE-in if it’s a descriptive word, like “Caribbean Cruise”
CHIC: Sheek
COCAINE: co-CAIN
CULINARY: KYOO-lin-ar-y
DATA: DAY-ta
GONDOLA: GON-duh-luh
GRATIS: GROT-is
IMPIOUS: im-PIE-us
VERSION: VER-zhun
VIKING: VIE-king
- Niche: Usually nitch, especially in a phrase like “<nitch> market”. Sometimes neesh if it’s on its own
- Mature: Ma-chure
- Cache: cash
- Adirondacks: <A-like-pat>-durr-ahn-dacks
- Fetish: Feh-tish
- Cthulhu: choo-too-loo, but I only ever say it in my head and I know it’s wrong
- Et cetera: et set-er-ah
- February: Feb-you-<ary like Mary>
- Sherbet: sure-bit
CARIBBEAN: <Cah-like-pat>-ruh-BE-in
CHIC: Sheek
COCAINE: co-cain
CULINARY: cuh-lin-ar-y
DATA: Day-ta
GONDOLA: GON-doe-luh
GRATIS: <grat-like pat>-iss
IMPIOUS: im-PIEous but I know it’s wrong
VERSION: ver-zhun
VIKING: vie-king
I’m similar, except I do “CULL-in-airy” for “culinary.” (Although, I will sometimes go with your pronunciation. Depends on my mood.)
I will also say “IMP-ee-us” for “impious,” but that’s the primary pronunciation in the dictionaries I looked at. So I’m a little surprised at dougie_mountie’s list and Robert Ripley’s claim, as there doesn’t seem to be any big “gotchas” on there that would suggest only 1 in 100,000 would pronounce those as he thinks right. (Except maybe for /ˈvɜːʒən/, which is only “correct” in a non-rhotic accent.)
I don’t pronounce those words. I find them morally unacceptable.
Maybe some judge will order me to do so.
LOL
Non-rhotic? 
“Non-rhotic” means where you don’t pronounce the “r” in certain cases, like in the stereotypical English accent or in Boston accents.
The pronunciation given here:
Has no “r” sound in it. American accents pronounce the “r” there. The quoted pronunciation is the “correct” pronunciation for these types of non-rhotic accents, but not for what you might call the general American accent, where the “r” is definitely pronounced (i.e. is rhotic), and the pronunciation is /ˈvɜrʒən/ or possibly /'vɜrʃən/.
my favourite spell and speak, you spell, it speaks.
Forgive me; I’m from central Indiana, as Midwestern as they come–and we pronounce the “r” very clearly. Rhotic through and through.
Niche neesh
Mature mah-chyoor
Cache kash
Adirondacks I don’t think I have ever said this word aloud.
Fetish feh-tish
Cthulhu kuh-thoo-loo (how weird is it that I have said this aloud, but not Adirondacks?)
Et cetera et set-er-uh
February feb-roo-airy
Sherbet sher-bet
CARIBBEAN ka-rib-ee-un
CHIC sheek
COCAINE ko-kain
CULINARY kul-uh-nairy
DATA day-tuh (It’s how he prefers it.)
GONDOLA gon-duh-luh
GRATIS grat-is (the first syllable vowel sound is the same as the first syllable vowel sound in crap)
IMPIOUS I have never said this word aloud.
VERSION ver-zhun
VIKING vy-king (the first syllable vowel sound is the same as the first person singular pronoun, I)
As someone who has admitted to pronouncing sherbet as sherbert, I disagree. Even though my brain seems to think the word ends in ert, doesn’t make it right. It’s also a word I use so very seldom that I haven’t been able to cure myself of the failing.