Sweetheart Deal Meaning

(idiomatic, business) A transaction, contract, or other agreement in which one party provides particularly favorable terms to the other, especially in suspicious circumstances.

Example: 1986, Ronald Sullivan, "Counsel Upholds Lease in Dispute on East Side," New York Times, 18 May (retrieved 22 Oct. 2008):
  Steven Matthews, described the lease last week as "a sweetheart deal that gives too much away for what the city gets in return."