depreciate (v.)youdaoicibaDictYouDict[depreciate 词源字典]
mid-15c., from Latin depretiatus, past participle of depretiare "to lower the price of, undervalue," from de- "down" (see de-) + pretium "price" (see price (n.)). Related: Depreciated; depreciating; depreciatory.[depreciate etymology, depreciate origin, 英语词源]
facile (adj.)youdaoicibaDictYouDict
late 15c., "easy to do," from Middle French facile "easy," from Latin facilis "easy to do" and, of persons, "pliant, courteous, yielding," from facere "to do" (see factitious). Usually now with depreciatory implication. Of persons, "easily led," from 1510s.
sermonize (v.)youdaoicibaDictYouDict
1630s, from Medieval Latin sermonizari, from Latin sermo (see sermon). "Chiefly depreciatory" [OED]. Related: Sermonizing.
skirmish (n.)youdaoicibaDictYouDict
late 14c., from Old French escarmouche "skirmish," from Italian scaramuccia, earlier schermugio, probably from a Germanic source (compare Old High German skirmen "to protect, defend"), with a diminutive or depreciatory suffix, from Proto-Germanic *skerm-, from PIE *(s)ker- (1) "to cut" (see shear (v.)).

Influenced in Middle English by a separate verb skirmysshen "to brandish a weapon," from Old French eskirmiss-, stem of eskirmir "to fence," from Frankish *skirmjan, from the same Germanic source. Compare scrimmage. Other modern Germanic forms have an additional diminutive affix: German scharmützel, Dutch schermutseling, Danish skjærmydsel. Skirmish-line attested by 1864.