undertaking

fe’l verb

1. To commit oneself (to an obligation, activity etc.). He undertook to exercise more in future.
2. To overtake on the wrong side. I hate people who try and undertake on the motorway.
3. To take upon oneself; to start, to embark on (a specific task etc.).
4. To pledge; to assert, assure; to dare say.

ot noun

1. The business of an undertaker, or the management of funerals
2. A promise or pledge; a guarantee
3. That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise
4. The act of one who undertakes (in either sense)