INSIDIOUS/INVIDIOUS

(A proofreader's note regarding “insidious” and “invidious”)

“Insidious,” “invidious”—the words of our study—

Are actors infrequent today.

There nevertheless are some roles that do favor

The talents they bring into play.

Though wearing their costumes with only slight difference,

They claim to tell stories distinct.

It’s quickly confirmed by a look at their origins—

A hint that the two are not linked.

“Insidious” in meaning when traced back in Latin

Is “ambush-like,” clearly and true.

“Invidious,” instead, springs from “ill will” and “envy,”

With “invi” from “envy” as clue.

“Insidious” has friends in “deceptive” and “subtle,”

And speaks of a gradual amassing

Of harmful or adverse effects that are hidden,

Revealed in their final undressing.

Another sense given is “harmful but tempting,”

“Seductive” then granted as well.

“Awaiting a chance to ensnare” (as in ambush)

Comes next as the last sense to gel.

“Invidious” expresses no sense of a “hiding,”

Regardless of usage as “envious”;

“Unpleasant by nature” and  “apt to cause ill will”

Do, likewise, say “harmful not devious.”

“They only suspected insidious insiders 

When statements invidious were sent.

Their source was well hidden, for none of the members

Admitted invidious intent.”