An agreement between two or more parties: ‘They closed the deal after a week of negotiating.’
A great/good deal of (to a great degree or extent or quantity) + uncountable noun: ‘He derived a great deal of pleasure from the world tour.’
Deal in: Do business or buy or sell: ‘The company deals in textiles.’
Deal with: (i) Be about (of books, articles etc.): ‘The book deals with insects.’ (ii) Take action with respect to: ‘He knows how to deal with this problem.’ (iii) Be in charge of, act on, or dispose of: I can deal with this crew of workers.’ (iv) Behave in a certain way towards others: ‘She fairly deals with her colleagues.’
