within bounds

Reasonable and allowable, up to a certain point, as in It's all right to play your stereo, but please keep the volume within bounds. Like its antonym, out of bounds, this term originally referred to the boundaries of a playing area of field.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.