'angularness' originates from English, formed from the adjective 'angular' (from Late Latin 'angulāris' < Latin 'angulus' meaning 'angle, corner') plus the native suffix '-ness,' where '-ness' meant 'state or quality.'

'angulus' developed into Late Latin 'angulāris', which influenced French 'angulaire' and English 'angular'; adding the English nominal suffix '-ness' produced the modern English noun 'angularness'.

Initially, it meant 'the state or quality of being angular,' and this meaning has remained largely unchanged, extending metaphorically to gauntness and stylistic stiffness.