Shibboleth: a custom, principle, or belief distinguishing a particular class or group of people, especially a long-standing one regarded as outmoded or no longer important.
From Pooja’s post here.
maudlin: self-pityingly or tearfully sentimental, often through drunkenness.
From mjcd2017’s post here.
traction: the action of drawing or pulling something over a surface, especially a road or track. This word is often used in “gain traction” to signify the popularity of a publication.
From Bonnywood’s post here.
escarpment: a long, steep slope, especially one at the edge of a plateau or separating areas of land at different heights.
From 100 Country Trek here.
nook and cranny: the smaller or less accessible parts of a place or object which are not normally noticed
From Geoff’s post here.
homophone: each of two or more words having the same pronunciation but different meanings, origins, or spelling, for example new and knew.
From Dave Kemp’s tweet here.
kvetch: complain(verb); a person who complains a great deal (noun). From Yiddish. I should have known this word, since I watched all of Woody Allen’s movies, which is all about kvetch in a certain way. I must have missed this word somehow.
turgid: swollen and distended or congested.
From Heterodox Buddhist’s post here.
clematis: A climbing plant of the buttercup family which bears white, pink, or purple flowers
flak: strong criticism.
appetency: a longing or desire.
abstention: the fact or practice of restraining oneself from indulging in something; abstinence.
whorl: a pattern of spirals or concentric circles
xenophile: an individual who is attracted to foreign peoples, manners, or cultures.
philatelist: A person who collects stamps.