English
subregularsubregular
From sub- + regular.
Formed from sub- + regular
Proto-Indo-European *upó ‘up; from below’
Proto-Italic *supo ‘under’
Latin sub ‘under, beneath, below’
English sub-
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
adj Almost or imperfectly regular.
Sources
Sources: Wiktionary, “subregular”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / subregular
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