It's often pronounced with an omitted letter.
"Aspirin" is sometimes pronounced with the second syllable omitted (as-prin)
Neither it is an added syllable
The word asprin has an omitted syllable. We pronounce it with two syllables when it technically has three.
Not usually.
In speech, the second syllable of "ivory" is often omitted.
A syllable is omitted for most accents when it's spoken.
The fourth syllable is often omitted. (in-si-dent-lee)
"Chocolate" is sometimes pronounced with the second syllable omitted (choc-lit)
"Chocolate" is sometimes pronounced with the second syllable omitted (choc-lit)
In some pronunciations of ivory, the second syllable is omitted. (ahy-vree)
"Platinum" is sometimes pronounced with the second syllable omitted (plat-nuhm)