I am with Nort here; the only one of those words I'd say without a full /ɔr/ is refractory (and I've also never heard promontory, but like Nort I'd guess that it has /ər/).Nortaneous wrote: ↑Mon May 04, 2020 8:22 pmhuh? I've never heard any of those without a full vowel in AmE (except 'refractory', which I've never heard with one, and 'promontory', which I've never heard but which I think I'd pronounce with /ə/)zompist wrote: ↑Sun May 03, 2020 4:04 pmmoratory, dormitory, expository, promontory, repository, celebratory, exploratory, observatory, conservatory.Pabappa wrote: ↑Sun May 03, 2020 11:45 am Likewise, are there many words ending in -(a|i)tory in which the /o/ *cannot* be pronounced as a full vowel, even in AmE? I can think of some that end in just -tory, like refractory, but they all seem to have their /t/ coming from the root of the word rather than an affix like -at- or -it-.
(Some of these may have /o/ and /ə/ in free variation.)
To me a good rule of thumb is that if the syllable before -tory is stressed, it takes /ər/ or the /ə/ is lost altogether, and if the syllable before -tory is unstressed, it takes /ɔr/.