acrasia
Acrasia (noun) means a lack of self-control, leading to excess or unruly behaviour.
Etymology
A learned borrowing from Late Latin acrasia (“lack of temperance”), taken along with its Ancient Greek etymon ᾰ̓κρᾱσῐ́ᾱ (ăkrāsĭ́ā, “bad mixture”), which is made up of ἄκρᾱτος (ákrātos, “pure, unmixed; of a person: intemperate, violent”) and -ῐ́ᾱ (-ĭ́ā, suffix forming feminine abstract nouns). Ἄκρᾱτος (Ákrātos) in turn derives from ᾰ̓- (ă-, prefix forming terms having a sense opposite to the stems or words to which it is attached) and κεράννυμι (keránnumi, “to blend, mix; to cool or temper by mixing”), ultimately from Proto-Indo-European *ḱerh₂- (“head, top; horn”), plus -τος (-tos, suffix forming adjectives). It is a doublet of acrasy.
