The difference between the right word and the almost right word is the difference between lightning and a lightning bug. ~Mark Twain
There are many words I can’t define. This is disconcerting to an aspiring writer. When I come across an unfamiliar word, I pause and decide whether or not to ignore the confrontation. In fact, I used to think there was shame in not knowing but, as the saying goes, the shame is in not finding out.
I now share a recent list of words that I needed to look up, a list that I will update as often as I come across new words or remember old ones that once baffled me. Perhaps you will join me in my attempt at growing a grandiloquent vocabulary?
Click the links for pronunciation. All definitions from http://www.thefreedictionary.com
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Acolyte: Noun
One who assists the celebrant in the performance of liturgical rites.
Acrimonious: Adjective
Bitter and sharp in language or tone; rancorous; marked by strong resentment or cynicism an acrimonious debate between the two candidates.
Casuistry: Noun
Reasoning that is misleading or oversubtle [Latin casus case] intended to rationalize or mislead.
Cronyism: Noun
Favoritism shown to old friends without regard for their qualifications, as in political appointments to office.
Derelict
Adjective: abandoned or unused and falling into ruins
Noun: a social outcast or vagrant [Latin derelinquere to abandon]
Lackadaisical: Adjective
Lacking spirit, liveliness, or interest; languid: “There’ll be no time to correct lackadaisical driving techniques after trouble develops” (William J. Hampton).
Loquacious: Adjective
Very talkative; garrulous. Full of trivial conversation.
Patina: Noun
1. a film formed on the surface of a metal
2.the sheen on the surface of an old object, caused by age and much handling [Italian: coating]
Phantasmagoria: Noun
A fantastic sequence of haphazardly associative imagery, as seen in dreams or fever; a shifting medley of dreamlike figures
Panoply: Noun
A splendid or striking array: a panoply of colorful flags. A magnificent array.
Paucity: Noun
Smallness of number; fewness. Scarcity; dearth: a paucity of natural resources.
Prescience: Noun
Formal knowledge of events before they happen [Latin praescire to know beforehand]
Prurient: Adjective
Inordinately interested in matters of sex; lascivious.
Pugilism: Noun
The skill, practice, and sport of fighting with the fists; boxing.
Vicissitude: Noun
One of the sudden or unexpected changes or shifts often encountered in one’s life, activities, or surroundings. Often used in the plural.
Weltschmerz: Noun
Sorrow or sadness over the present or future evils or woes of the world in general; sentimental pessimism.

I like ‘weltschmerz.’ How could I not have known the word for world weariness?
Jess