Definition of unreactive in English:

unreactive

Syllabification: un·re·act·ive
Pronunciation: /ˌənrēˈaktiv
 
/

adjective

Having little tendency to react chemically.

Definition of unreactive in:

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Word of the day flippant
Pronunciation: ˈflɪp(ə)nt
adjective
not showing a serious or respectful attitude