English
declarable
From declare + -able.
A compound of declare + -able
Proto-Indo-European *kelh₁- ‘to call, shout’
…
Latin clārō
Latin dēclārō ‘to make clear’
Old French declarer
Middle English declaren
English declare
Today it means
adj Capable of being declared.
Language periods are conventional ranges, not dates for this word.
Etymograph / declarable