English
rulable
From rule + -able.
Formed from rule + -able
Proto-Indo-European *h₃reǵ- ‘to straighten’
…
Latin regō ‘to keep straight’
Latin regula ‘straight stick’
Old French riule
Middle English reule
English rule
Today it means
adj Capable of being ruled; governable.
Language periods are conventional ranges, not dates for this word.
Etymograph / rulable