caregiver

noun

1. a person who cares for someone who is sick or disabled.
2. an adult who cares for an infant or child.

noun

1. US and Canadian a person who has accepted responsibility for looking after a vulnerable neighbour or relativeAlso called: carer

n.

by 1974, from care (n.) + giver. It has, in many senses, the same meaning as care-taker, which ought to be its antonym.

n.

1. An individual, such as a physician, nurse, or social worker, who assists in the identification, prevention, or treatment of an illness or disability.
2. An individual, such as a parent, foster parent, or head of a household, who attends to the needs of a child or dependent adult.