Part of speech: Verb
enter upon an activity or enterprise
Categories: Initiate, Pioneer
Part of speech: Verb
accept as a challenge
Example: I'll tackle this difficult task
Categories: Confront, Face up, Face
Part of speech: Verb
promise to do or accomplish
Example: guarantee to free the prisoners
Categories: Promise, Assure
Part of speech: Verb
accept as a charge
Categories: Accept, Consent, Go for
Attempt, Guarantee, Undertake, Tackle, Set about
The word "undertake" comes from Middle English undertaken.
under – A related word in the same word family.
take – A related word in the same word family.
undernim – A related word in the same word family.
Middle English had more flexible word order than Modern English because it retained more inflections.