Fourwords (Puzzle #3)

Fourwords is like a 4×4 crossword puzzle. Fill in the grid with sixteen letters such that the eight four-letter words created agree with the eight clues.

Colours
Taxis
Man, for one
Whirl
Colourful
Jacob's brother
German river
Opposite of more

Previous puzzle: Puzzle #2.
Next puzzle: Puzzle #4.