Jim: ~~~Definitions of invective on the Web:

vituperation: abusive or venomous language used to express blame or censure or bitter deep-seated ill will
wordnetweb.princeton.edu/perl/webwn
...
en.wikipedia.org/wiki/Invective
An expression which inveighs or rails against a person; A severe or violent censure or reproach; Something spoken or written, intended to cast opprobrium, censure, or reproach on another; A harsh or reproachful accusation; Characterized by invection or railing
en.wiktionary.org/wiki/invective
An invective is a violent denunciation. It's a severe curse. A violent vituperation. Diatribe, Tirade are the words that mean the same and appear in GRE almost every time.
learnwordlist.com/blog/15-minutes-to-gre-vocabulary/2009/12/gre-word-list-test-blog-barrons-vocabulary
an emotionally violent, verbal denunciation or attack using strong, abusive language.
www.buhstech.org/mackenzie/assignments/Glossary%20of%20Terms.doc
an intensely vehement, highly emotional verbal attack
cmsweb1.loudoun.k12.va.us/5272071714341570/lib/5272071714341570/List_of_Literary_Terms.doc
A violent attack, usually of a personal nature.
www.ravenspire.com/coolschool/docs/dictionary.html
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Now, Jim; do you honestly think my mild language, words like "lefty" & "doctrinaire", will really qualify as "curse; violent vituperation; emotionally violent verbal denunciation"???

Honest, now? Stop being so wet & thin-skinned. If you can't stand the lukewarm heat I am generating in my language you would do well to get right out of the kitchen. I am surprised at you, using a word like "invective" to me. Get back into the real world, for heaven's sake, or go away.

Best

~Michael~