English
regularness
From regular + -ness.
Formed from regular + -ness
Proto-Indo-European *h₃reǵ- ‘move in a straight line’
Latin rēgula ‘rule’
Latin rēgulāris ‘continuing rules for guidance’
Anglo-Norman reguler
Middle English reguler
English regular
Today it means
noun regularity
Language periods are conventional ranges, not dates for this word.
Etymograph / regularness