The story
- Latin · derived frompēnsō
- Old French · derived frompensif“thoughtful”
- Middle English · inherited frompensif
- English todaypensive
From Middle English pensif, pensyfe, pencyve, from Old French pensif (“thoughtful”), from penser (“to think”) (from Latin pēnsō) + -if (English -ive).
Etymology from Wiktionary, CC BY-SA 4.0.