flourish

Concise Oxford English Dictionary © 2008 Oxford University Press:
flourish/ˈflʌrɪʃ/

▶verb

• 1 grow or develop in a healthy or vigorous way.

  ■ be working or at the height of one's career during a specified period.

• 2 wave (something) about dramatically.

▶noun

• 1 a bold or extravagant gesture or action.

• 2 an ornamental flowing curve in handwriting or scrollwork.

• 3 Music an ornate musical passage.

  ■ a fanfare played by brass instruments.

– derivatives
flourisher noun.

– origin ME: from OFr. floriss-, lengthened stem of florir, based on L. florere, from flos, flor- ‘a flower’.