to accept some work or responsibility
Example: I can’t take on any more work at the moment.
to decide to do something without asking permission from anyone else
Example: If you think you can take on Mr Big himself you're crazier than I thought.
to develop a particular character or appearance
Example: My mother took it on herself to invite them.
to fight or compete against someone
Example: On account of the distance he will eventually travel, his flight will be permitted to stop once on the eastern seaboard to take on fuel.
to start to employ someone
Example: Our website is taking on a new look.
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