tip the scale

tip the scales

1. (idiomatic, intransitive) To change the fortunes, either positively or negatively.
   • 2007, Melannie Svoboda, In Steadfast Love: Letters on the Spiritual Life‎, page 122:

     The priest went on to say that God tipped the scales in favor of hope "through the resurrection of our crucified divine brother Jesus."

2. (idiomatic, intransitive, used with "at") To weigh (have a certain weight).
   • 1917, Mabel Thorp Boardman, Under the Red Cross flag at home and abroad‎, page 190:

     was kindly called to account by the good doctor when her nine-months'-old baby tipped the scales at barely twelve pounds.

• caliphettes