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-bula, -bla- Instrumental suffix.

Fossilized in Spanish. From Latin -bula 'id.' From Proto-Italic *-þlo- 'id.' From Proto-Indo-European *-dhlo- 'id.'

Romance: Western Vulgar Latin *-bla-: Asturian -la-, Portuguese -la-, Galician -la-, Catalan -ula- (*-bula-), French -bl(e)-, Italian -ba-; Eastern Vulgar Latin: Romanian -bulă (learned borrowing); Extra-Comparanda: English -ble (borrowed from Old French -ble

Indo-European: Balto-Slavic *-mi: Lithuanian -mi, Old Church Slavonic -mĭ; Armenian *-bhi: -b; Hellenic *-bhi: Mycenaean -pi; Indo-Iranian: Sanskrit (inst. pl.) -dhís

Present in words like fábula, but less obviously in words like the -bl- in hablar.