.

.
The pronunciation of any word in English (or any language at all) is not Universal.  This is because there are many different dialects of The English Language — both throughout America, and also world-wide.  The pronunciations that are presented on GiveMeSomeEnglish!!! are based-upon a combination of both “common usage”, and the most neutral accent used in The International Common Tongue — a.k.a. “American English”.
.

Assistant – For this word:  the “A” is pronounced as a u-schwa;  the “ss” combination is pronounced simply like the single letter “s” (this is the standard pronunciation of this letter combination in The Common Tongue);  the “i” is short;  and for the “-ant” suffix – the “a” is pronounced as an i-schwa, and the final “t” is (often) stopped (this is the standard pronunciation of this suffix in The Common Tongue).

– /uh-SIHS-tihn-[t]/ – /ə(ʌ)ˈsɪs.tə(ɪ)n.[t]/ – Notice also that the stress is on the second syllable and that the “t” ending (when not stopped) acts as a separate syllable –

.

Coming Soon!
.

.

Learn More About The Word “Assistant” On Wiktionary

.