lallation /lə-LAY-shən/. noun. Baby talk; gibberish. Also, confusion of the R sound with the L sound (AKA lambdacism).

“Disorders of articulation include lisping, lallation, substitution of sounds, omission of sounds, and addition and distortion of sounds.” (S. S. Chauhan)

“Lallation is sound separated from meaning, but nonetheless, as we know, not separated from the infant’s state of satisfaction.” (Colette Soler)

“Lallation it’s called, the difficulty Asians have in pronouncing ‘L’ and ‘R’ in English. For years it prompted adolescent jokes about ‘flied lice’ and ‘I went to U.C.R.A.’ The wisecracks have waned as Japan has given America lessons in quality and industry. No one is heard to mock the Honda Acula or the Sony Warkman.” (New York Times)

lagniappe /LAN-yap/. noun. A tip, a gratuity or gratuitous addition, something given above what has been earned.

“And more than this, than the revenge, as lagniappe to the revenge as it were, this nosegay of an afternoon, this scentless prairie flower which will not be missed and which might as well bloom in your lapel as in another’s” (William Faulkner, from Absalom, Absalom)

“We picked up one excellent word—a word worth travelling to New Orleans to get; a nice limber, expressive, handy word: ‘lagniappe’. They pronounce it lanny-yap.” (Mark Twain, from Life on the Mississippi)

“Lagniappe, usually attributed to the French of New Orleans, in fact originated among the Kechuan Indians of Peru as yapa. The Spanish adopted it as ñapa. The French then took it from the Spanish and we from the French.” (Bill Bryson, from Made in America)

“He pays off Bodine, full price, overriding Bodine’s offer to prorate for what’s missing. ‘Call it a little lagniappe, goodbuddy, that’s Duane Marvy’s way o’ doin’ thangs…'” (Thomas Pynchon, from Gravity’s Rainbow)