I have observed that there are, at least, two patterns of pronunciation for words ending in -ative:
- The first syllable is stressed and the suffix is pronounced as
/eɪtɪv/(e.g. qualitative) - The second syllable is stressed and the suffix is pronounced as
/ətɪv/(e.g. declarative)
Is there a way (other than memorizing them all, of course) to know how a certain word ending in -ative is pronounced?