Dictionary.com
Thesaurus.com

Word of the Day

Learn a new word every day! The Dictionary.com team of language experts carefully selects each Word of the Day to add some panache to your vocabulary.


lapidify

[luh-pid-uh-fahy]

verb (used with or without object)

to turn into stone.

Explanation

The relatively rare verb lapidify, “to turn into or become stone, petrify,” comes via French lapidifier from Medieval Latin lapidificāre. Lapidificāre is a transparent compound of Latin lapid- (the inflectional stem of lapis “stone”) and the Latin verb-forming suffix -ficāre, ultimately a derivative of facere “to make, do.” The resemblance between lapis and Greek lépas “bare rock” is “hardly accidental,” as the pros say: Both words probably come from a Mediterranean (non-Indo-European) language. Lapidify entered English in the mid-17th century.

threequel

[three-kwuhl]

noun

the third in a series of literary works, movies, etc.; a second sequel: The first two films in this underworld anthology were cinematic gems, but the threequel was at best a disappointment.

Explanation

Threequel, “the third in a series of literary works, movies, etc.; a second sequel,” is a very recent neologism dating from around 1980. Threequel is an obvious compound of three and (se)quel. The term pops up in amusingly dismissive reviews of Jaws 3-D (a.k.a. Jaws III and Jaws 3), Rambo III, and RoboCop 3.

ineffable

[in-ef-uh-buhl]

adjective

incapable of being expressed or described in words; inexpressible.

Explanation

Ineffable ultimately comes from Latin ineffābilis “(of a word) unpronounceable,” and in Late Latin and Christian Latin “(of the divine name) that cannot or must not be spoken.” Ineffābilis is a compound of in-, the Latin negative prefix that is equivalent to English un- (as in unspoken), and the verb effārī “to speak, speak out, speak solemnly, declare” (itself a compound of the preposition and prefix ex, ex- “out, out of” and fārī “to speak”). Another English derivative, infant, comes from Latin infāns (inflectional stem infant-) “small child, infant,” literally “nonspeaking,” formed from the same prefix in- and fāns, the present participle of fārī. Ineffable entered English in the late 14th century.

vale

[veyl]

noun

the world, or mortal or earthly life: this vale of tears.

Explanation

Vale may be familiar to some readers from the woeful expression vale of tears, which casts the world as a place of sorrow and difficulty. Vale, “a valley, a low-lying piece of land usually having a brook,” comes from Middle English val, valle, vaile (and more variants), from Old French val, vau, vauls (and more variants), from Latin vallēs (inflectional stem valli-) “valley.” Vale in its literal sense as a geographical feature dates from the second half of the 14th century; the extended, figurative sense, “the world, mortal life, earthly existence,” dates from the first half of the 15th century.

somnambulism

[som-nam-byuh-liz-uhm, suhm-]

noun

sleepwalking.

Explanation

Somnambulism, “sleepwalking,” comes via French somnambulisme from New Latin somnambulismus, a pretty transparent compound of the noun somnus “sleep” and the verb ambulāre “to walk, take a walk, stroll,” source of English amble. Somnus is the Latin result of the very common Proto-Indo-European root swep-, swop-, sup- “to sleep.” In Latin, the derivative noun swepnos (or swopnos) becomes sopnos, then somnus. The derivative noun supnos becomes hýpnos in Greek. Another derivative noun, swep-os-, becomes sopor- "sleep" in Latin (via swop-os-, then sopor-), as in English soporific “causing sleep.” Swepnos becomes swefn “sleep, dream” in Old English and sweven “dream, dream-vision” in Middle English. William Langland, usually considered to be the author of Piers Plowman, fell into a merveilouse swevene, a “curious dream,” one May morning in the Malvern Hills in Hereford and Worcestershire, England, and Piers Plowman is the narrative of his dream. Somnambulism entered English at the end of the 18th century.