Massachusetts General Laws Part III. Courts, Judicial Officers and Proceedings in Civil Cases (Ch. 211-262) Ch. 211A, § 15

If, upon the hearing of an appeal or exceptions in any proceeding, it appears that the appeal or exceptions are frivolous, immaterial or intended for delay, the appeals court may, either upon motion of a party or on its own motion, award against the appellant or excepting party double costs from the time when the appeal was taken or the exceptions were allowed, and also interest from the same time at the rate of twelve per cent a year on any amount which has been found due for debt and damages, or which he has been ordered to pay, or for which judgment has been recovered against him, or may award any part of such additional costs and interest.