English

inconstantly

From inconstant + -ly.

A compound of inconstant + -ly

Proto-Italic *komstaēō ‘to stand together’

…

Latin cōnstāns ‘standing firm, unchangeable’

Latin incōnstāns ‘changeable’

Middle French inconstant

Middle English inconstant

Today it means

adv In an inconstant manner.

Language periods are conventional ranges, not dates for this word.

Etymograph / inconstantly