begun

For the verb: "to begin"

Simple Past:	began
Past Participle:	begun

Multiple Entries:
  begun    begin  

Concise Oxford English Dictionary © 2008 Oxford University Press:
begun/bɪˈɡʌn/

past participle of begin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
begin/bɪˈɡɪn/

▶verb (begins, beginning; past began; past part. begun)

• 1 perform or undergo the first part of (an action or activity).

  ■ (begin on/upon) set to work on.

  ■ start speaking.

  ■ (begin with) have as a first element.

  ■ (begin at) (of a commodity) have as its lowest price.

• 2 come into being.

• 3 informal have any chance or likelihood of doing: I can't begin to describe my confusion.

– derivatives
beginner noun.

– origin OE beginnan, of Gmc origin.