English
rulerless
From ruler + -less.
Formed from ruler + -less
Proto-Indo-European *h₃reǵ- ‘to straighten’
…
Latin rēgula
Old French reule ‘rule’
Middle English reule ‘legal code, set of rules’
Middle English reuler ‘ruler, leader, governor’
English ruler
Today it means
adj Without a ruler.
Language periods are conventional ranges, not dates for this word.
Etymograph / rulerless