What is wrong with using "not"?
It is a negative to an eloquent adjective, verb or noun.
Simply the opposite state of being; which one should NOT frown

For programmers, "not" is a logical complement,
which helps us filter-out things we do NOT want.
And is used sparsely and NOT to flaunt

By simply twisting our thought at 180-degrees,
it's used to portray an abrupt reversal image in our mind.
A quick look at a mirror, and NOT you will find.

Affix a k-, yet "knot" still sounds the same
but it will help keep our things secure.
From our pretzels, shoes and the ribbon-wrapped gifts we procure.

Add an s-, and the children will be amused;
defiance is in its nature, is it NOT?
That is, to disgust their friends with each others snot.

So, to be or NOT to be.