As an adjective ataraxic
is of or pertaining to ataraxia.
As a noun ataraxis is
the absence of stress or anxiety; serenity.
ataraxic
English
Adjective
(
en adjective)
Of or pertaining to ataraxia
ataractic; tranquilizing
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ataraxis
English
Noun
(-)
the absence of stress or anxiety; serenity