English
settable
From set + -able.
Formed from set + -able
Proto-Indo-European *sed- ‘to sit’
…
Proto-Germanic *satjaną ‘to set’
Proto-West Germanic *sattjan ‘to set’
Old English settan ‘to set’
Middle English setten ‘to seat’
English set
Today it means
adj Capable of being set.
Language periods are conventional ranges, not dates for this word.
Etymograph / settable