IPA: /ˈroʊtəˌtɪl/
KK: /ˈroʊtəˌtɪl/
To prepare soil for planting by breaking it up with a machine called a rototiller.
She rototilled the garden before planting flowers.
Past: rototilled
Past Participle: rototilled
Rototill is formed from "rota" (from Latin, meaning wheel) and "till" (from Old English "tyllan", meaning to prepare or cultivate). The word describes the action of using a wheeled machine to prepare the soil for planting.
Think of a 'wheel' ('rota') helping to 'prepare' ('till') the soil — that's how rototill means to cultivate the ground.
No commonly confused words.