Where does “amplo” come from?

amplo (Spanish) comes from Latin amplus, from Latin -ō, from Proto-Indo-European -ō — Derives nouns from roots.

Ancestry of “amplo”, step by step

StepLanguageWordMeaning
1Latinampluslarge, spacious, roomy; abundant, ample;...
2Latin-ōsuffixed to nouns or adjectives. Originally a-stem nouns. Later extended to nouns with other stems. Forms regular first-conjugation verbs
3Proto-Indo-European-ōDerives nouns from roots
Every word from Proto-Indo-European -ō →Every word from Latin -ō →Every word from Latin amplus →
amplo — Etymology, Origin & Word History | Etymology Explorer