possiblepossible

Possible comes from Middle English possible, from Old French possible, from Latin possibilis, from possum ‘to be able’.

1. Proto-Italicc. 1500–700 BCE*possom¹reconstructed
2. Latinc. 75 BCE–200 CEpossum²‘to be able’
3. Latinc. 75 BCE–200 CEpossibilis²‘possible’
4. Old Frenchc. 842–1400possible²
5. Middle Englishc. 1150–1500possible²
6. Englishearliest quotation 1881–1882possible²

1. ¹ Wiktionary, Latin possum
2. ² Wiktionary, English possible
3. Earliest quotation in Wiktionary’s entry: 1881–1882, Robert Louis Stevenson, Treasure Island: “[…] “don’t you be in any great hurry after…”.