verb/a.t(ə).le/
to harness, yoke, hitch (e.g. a horse to a wagon); to get down to, apply oneself to
“L’écrivain et journaliste franco-libanais s’attèle à narrer l’histoire de ses parents et sa propre quête d’identité dans un récit plein d’humour.” — The French-Lebanese writer and journalist sets out to tell the story of his and his parents' search for identity in an account that is full of humour.
From Vulgar Latin *attelare, from Latin protelare.