(A proofreader's note regarding “derisive” and “derisory”)

“Derisory” was first of the infants in nursery;

“Derisive” arrived in due course;

Since standing nearby was “derision” as parent,

Some differences puzzled their nurse.

“Derisive” would speak of “conveying or causing

Contemptuous ridicule/scorn.”

“Derisory,” the elder, surprisingly mellow,

Went further afield to adorn.

Instead of describing the thing that was mocking,

“Derisory” put focus elsewhere;

The object of mockery itself was the target,

“Inviting derision” to wear.

A clue to this difference in meanings as stated

Is found in the suffixes carried.

The “ory” of one hints a less direct function

In adjectives busy and harried.

Most “ive”-bearing adjectives act as descriptors 

Of traits found inherent in nouns.

With “ory,” more likely, a function or purpose

Is what it describes on its rounds.

In commonplace meaning, “derisory” stresses

“Inadequate/piffling in nature,”

Which then is inviting of scorn or of mockery,

Delivered by nouns with that feature.

Quite sadly, however, “derisory” sometimes

Is taken as saying “derisive.”

We know that these words although sharing a cradle

Are different in ways most decisive.

“Though carefully entered, the sum was derisory,

And comments derisive ensued.

The manager frowned, and derisive guffawing

Was nipped in the bud as too rude.”