1. a good deal - Noun
2. a good deal - Adverb
to a very great degree or extent
Source: WordNetSince you get more joy out of giving joy to others, you should put a good deal of thought into the happiness that you are able to give. Eleanor Roosevelt
It takes a good deal of physical courage to ride a horse. This, however, I have. I get it at about forty cents a flask, and take it as required. Stephen Leacock
If some really acute observer made as much of egotism as Freud has made of sex, people would forget a good deal about sex and find the explanation for everything in egotism. Wallace Stevens
A good deal for two, is a clip on the ears of a third. Finnish Proverb
At court they sell a good deal of smoke without fire. Danish Proverb
Better a little chiding than a good deal of heartache. English Proverb