threefold

adjective

1. comprising three parts, members, or aspects; triple: a threefold program.
2. three times as great or as much; treble: a threefold return on an investment.

adverb

3. in threefold manner or measure; trebly.

noun

1. a unit of stage scenery consisting of three flats hinged together.

adjective

1. equal to or having three times as many or as much; triplea threefold decrease
2. composed of three partsa threefold purpose

adverb

3. by or up to three times as many or as much

adj.Old English þrifeald; see three + -fold.