Where does “unpredicatable” come from?

unpredicatable (English) comes from English predicatable, from English predicate, from Latin praedicātus, from Latin praedicō, from Latin dīcō, from Latin -tiō, from Latin dissertātiō, from Latin dissertus — small stone, pebble; gravel, rubble.

unpredicatable (English): That cannot be predicated

Definitions

That cannot be predicated

Ancestry of “unpredicatable”, step by step

unpredicatable traces back through two separate lines of ancestry.

via English predicatable

Step	Language	Word	Meaning
1	English	predicatable	Predicable; capable of being predicated
2	English	predicate	The part of the sentence which states something...
3	Latin	praedicātus	proclaimed, having been proclaimed, declared publicly, having been declared publicly
4	Latin	praedicō	to proclaim, declare publicly
5	Latin	dīcō	to say, talk, speak, utter, mention
6	Latin	-tiō	tion, -ation, -ing
7	Latin	dissertātiō	(spoken) dissertation, discourse, disquisition
8	Latin	dissertus	arranged, disposed; explained
9	Latin	disserere	second-person singular future passive indicative...
10	Latin	dis-	asunder, apart, in two; reversal, removal;...
11	Latin	calceus	shoe
12	Latin	calx	limestone; chalk; the finish line
13	Ancient Greek	χάλιξ	small stone, pebble; gravel, rubble

via English un

Step	Language	Word	Meaning
1	English	un	One

Every word from Ancient Greek χάλιξ →Every word from Latin -tiō →Every word from Latin dis- →