"Diminisher" is a word in ENGLISH

A soft white alloy of variable composition (as a nine parts of tin to one of copper, or of fifty …

búhin - Diminution, reduction, deduction, subtraction, lessening; to lessen, diminish, reduce, deduct, subtract, take off. Nagaamát-amát sang búhin ang humáy. …

To exchange; to put or substitute something else in place of, as a smaller penalty, obligation, or payment, for a …

To cause to grow less; to diminish gradually; as, extravagance decreases one's means.

To act reciprocally, so as to augment, diminish, or otherwise affect one another; -- said of waves, rays of light, …