Difference between Belittle and Diminish

BELITTLE vs DIMINISH: VERB

Belittle
Lessen the authority, dignity, or reputation of
To knowingly say that something is smaller or less important than it actually is.
Cause to seem less serious; play down
Express a negative opinion of

To represent or speak of as unimportant or contemptible: : disparage.
To cause to seem little or smaller than something else.
To make little or less in a moral sense; to speak of in a depreciatory or contemptuous way.

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

To cause to appear small; depreciate; lower in character or importance; speak lightly or disparagingly of.
Cause to seem less serious
Play down
To make small or smaller; reduce in proportion or extent.

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

Devalue, Underestimate, Smear, Undermine, Malign, Discredit, Downplay, Trivialize, Pick at, Find fault with, Minimize, Derogate, Diminish, Disparage, Denigrate

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

Overlook, Devalue, Underestimate, Smear, Undermine, Malign, Discredit, Downplay, Trivialize, Pick at, Minimize, Derogate, Diminish, Disparage, Denigrate

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

Posts that belittle others will not be tolerated.
My point was NOT to belittle your training.
And yet, how can they belittle this Revelation?
Do not belittle other sections of the community.
Do not name call, condescend, or belittle others.
Beard did not belittle the people of America.
Inexperienced negotiators tend to belittle unfamiliar cultural practices.
He just likes to belittle people, especially women.
To belittle, learning rightly used would be to belittle the food we eat and the air we breathe.
We who have yet a little span of life left had better belittle ourselves than to belittle those who have gone before us.

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.