16 Letter Adjectives Starting with OR

Browse 8 valid English 16 letter adjectives that start with OR, from Organophosphorus, Orthopsychiatric, Orthosymmetrical, Orthosubstituted, Orbitosphenoidal, Ornithorhynchous and Ordinatomaculate to rarer terms. Check definitions and spelling below, or visit our adjective grammar guide to check adjective order and comparative rules.

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Starts with ORB
1 words
orbitosphenoidal
Starts with ORD
1 words
ordinatomaculate
Starts with ORG
1 words
organophosphorus
Starts with ORN
2 words
ornithorhynchous
ornithocephalous
Starts with ORT
3 words
orthopsychiatric
orthosymmetrical
orthosubstituted

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