1. Capable of undergoing a chemical reaction with oxygen
   - oxidisable [Brit]

See also: reactive

• unimodal
• unimpaired
• unimpassioned
• unimpeachable
• unimpeachably
• unimpeded
• unimportance
• unimportant
• unimposing
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• unimpressionable
• unimpressive
• unimpressively
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• unindustrialized
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• uninflected
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• uninformative