behavioral The behavioral sciences have been slow to change partly because the explanatory items often seem to be directly observed and partly because other kinds of explanations have been hard to find. blunder The police blundered badly by arresting the wrong man. brighten The new carpet brightened the room. capsule The capsule failed to separate from the earth satellite. carefree How wonderful it would be to be young and carefree again! chronic Is your disease chronic or acute? circulation Police say a number of forged banknotes are in circulation . clearing This is the unorthodox view of a German soil scientist who has shown that burnt clearings in the Amazon, dating back more than 1 000 years, helped create patches of rich, fertile soil that farmers still benefit from today.