reactivenessn.
/rɪˈaktɪvnᵻs/, U.S. /riˈæktɪvnᵻs/ The quality or condition of being reactive; reactivity.
ΚΠ
1841 N. Webster Amer. Dict. Eng. Lang. Reactiveness, the quality of being reactive.
1855 H. B. Wallace Art, Scenery & Philos. in Europe 80 He who is most largely dowered with this brightly-moulding reactiveness of spirit, is the greatest artist.
1886 Mind 11 509 In reproduction or self-preservation we have the combination of this universal sensibility and this particular reactiveness to form the individuality of the organism.
1896 T. S. Clouston Clin. Lect. Mental Dis. (ed. 4) 11 The reactiveness of the cortical cell differs in every human being, just as his face differs from every one else, and reactiveness is the brain quality chiefly affected in insanity.
1907 Lancet 2 Feb. 331/1 He holds that persons with such abnormal reactiveness might be wholly or largely prevented by intelligent observation and careful upbringing from becoming insane.
2001 Yearbk. Eng. Stud. 31 80 The heightened reactiveness of combat turns life into a series of reflex responses to urgent situational cues.
This entry has been updated (OED Third Edition, December 2008; most recently modified version published online March 2022).
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