Where does “outstubborn” come from?

outstubborn (English) comes from English out-, from Romanian -uț, from Latin -utus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

outstubborn (English): To be more stubborn than

Definitions

To be more stubborn than

Ancestry of “outstubborn”, step by step

Step	Language	Word	Meaning
1	English	out-	External to, on the outside of; Toward the...
2	Romanian	-uț	Forms masculine diminutives of nouns and...
3	Latin	-utus	—
4	Latin	-tus	Forms the past participle of verbs; Forms...
5	Proto-Italic	-tus	—
6	Proto-Indo-European	-tus	Derives action nouns from verb roots

Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Romanian -uț →