undertake

Verb
  1. Enter upon an activity or enterprise (synset 201654835)
  2. Accept as a challenge (synset 202575545)
    "I'll tackle this difficult task"
  3. Promise to do or accomplish (synset 200891076)
    "guarantee to free the prisoners"
  4. Enter into a contractual arrangement (synset 200890307)
  5. Accept as a charge (synset 202545352)

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