Difference between Diminish and Detract

DIMINISH vs DETRACT: VERB

To draw or take away; divert.
To reduce the value, importance, or quality of something. Often used with from.
To take away a part or something, especially from one's credit; to lessen reputation; to derogate; to defame; -- often with from.

To make smaller in any manner; to reduce in bulk or amount; to lessen; -- opposed to augment or increase.
To lessen the authority or dignity of; to put down; to degrade; to abase; to weaken.
To make smaller by a half step; to make (an interval) less than minor.
To take away; to subtract.
A scale of gradation used in finding the different points for drawing the spiral curve of the volute.
A board cut with a concave edge, for fixing the entasis and curvature of a shaft.
A stile which is narrower in one part than in another, as in many glazed doors.
One whose upper diameter is less than the lower.

Synonyms Dwindle, Contract, etc. (see decrease); to shrink, subside, abate, ebb, fall off.
To lessen; become or appear less or smaller; dwindle: as, the prospect of success is diminishing by delay.
In music, to lessen by a semitone, as an interval.
To take away; subtract: with from, and applied to the object removed.
To lower in power, importance, or estimation; degrade; belittle; detract from.
To lessen; make or seem to make less or smaller by any means; reduce: opposed to increase and augment: as, to diminish a number by subtraction; to diminish the revenue by reducing the customs.
To taper, as a column.

Diminish
Take away a part from
To take away a part; hence, specifically, to take away reputation or merit: followed by from.
Synonyms Decry, Depreciate, Detract from, etc. See decry.
To depreciate the reputation or merit of; disparage; belittle; defame.
To take away; withdraw; abate: now always with a quantitative term as direct object, followed by from: as, the defect detracts little from the intrinsic value.

Wane, Impair, Hamper, Undercut, Hinder, Detract, Dampen, Dilute, Undermine, Weaken, Erode, Fall, Decrease, Belittle, Lessen

Impair, Interfere, Affect, Derogate, Downplay, Impinge, Jeopardize, Hamper, Impede, Undermine, Hinder, Diminish, Overshadow, Distract, Take away

Impede, Impair, Hamper, Undercut, Hinder, Detract, Dampen, Dilute, Undermine, Weaken, Erode, Fall, Decrease, Belittle, Lessen

Disrupt, Impair, Affect, Derogate, Downplay, Impinge, Jeopardize, Hamper, Impede, Undermine, Hinder, Diminish, Overshadow, Distract, Take away

UK domestic law or diminish rights of individuals.
It is to obey body and diminish spirit.
To diminish or destruct in a slow fashion.
We expect this concentration to diminish over time.
As all the time speeds can diminish depending.
To diminish that, change your cabin air filter.
Over time, this source of moisture will diminish.
You love them and these outward appearances do NOT diminish your child and they do NOT diminish your love or commitment for your child!
Passage of time may diminish complicity with prior evil acts, though it does not diminish the evil nature of the original act.
They do not diminish the obligations of any employer or diminish workplace safety.