I always pronounce "composite" as COM-posite when it is used as an adjective or a noun. But in some technical contexts as "alpha compositing" it is also used as a verb, and in this case I discovered myself reading out as com-POZ-ite. As a non-native speaker of English, I got unsure about the pronunciation, so I looked up in several dictionaries.
- Merriam-Websters list (käm-ˈpä-zət) as the main pronunciation, and (ˈkäm-pə-zit) as "especially British".
- dictionary.com, which uses Random House Unabridged dictionary as its main, lists (kuhm-poz-it) as the only pronunciation, so it seems stressing the second syllable is the norm in American English.
- dictionary.com also has a British English dictionary when you scroll down, which is Collins English Dictionary. For the adjective and the noun, the given pronuncation is (ˈkɒmpəzɪt), and for the verb, they suggest (ˈkɒmpəˌzaɪt). I also checked the website of Collins dictionary, and when you scroll down, they do list (ˈkɒmpəˌzaɪt) as a pronunciation for the verb with a voice recording.
- The online version of Oxford and Cambridge English dictionary doesn't have an entry of "composite" as a verb.
- Wiktionary says (ˈkɒmpəzɪt) is the Canadian or "received" pronunciation and (kəmˈpɑzɪt) is the American pronunciation.
Gathering all these it seems it's okay to stick to (ˈkɒmpəzɪt) regardless of the type (verb, noun, etc.) of the word, but this way, isn't it a bit uncomfortable to pronounce with a suffix, like "compositing" as COM-positing?
I'm wondering how actual British English speakers pronounce this word as a verb. Collins dictionary is making things more confusing as they list (ˈkɒmpəˌzaɪt) as the pronunciation for the verb. It the word actually pronounced this way?