Is it ensure, insure, or assure?
12c., combination of Old Norse brenna "to burn, light," and two originally distinct Old English verbs: bærnan "to kindle" (transitive) and beornan "to be on fire" (intransitive), all from Proto-Germanic *brennan/*branajan (cf. Middle Dutch bernen, Dutch branden, Old High German brinnan, German brennen, Gothic -brannjan "to set on fire"). This perhaps is from PIE *gwher- "to heat, warm" (see warm (adj.)), or from PIE *bhre-n-u, from root *bhreue- "to boil forth, well up" (see brew (v.)). Related: Burned/burnt (see -ed); burning.
Figuratively (of passions, battle, etc.) in Old English. Meaning "cheat, swindle, victimize" is first attested 1650s. In late 18c, slang, burned meant "infected with venereal disease." To burn one's bridges (behind one) "behave so as to destroy any chance of returning to a status quo" (attested by 1892 in Mark Twain), perhaps ultimately is from reckless cavalry raids in the American Civil War. Slavic languages have historically used different and unrelated words for the transitive and intransitive senses of "set fire to"/"be on fire:" cf. Polish palić/gorzeć, Russian žeč'/gorel.
c.1300, "act of burning," from Old English bryne, from the same source as burn (v.). Until mid-16c. the usual spelling was brenne. Meaning "mark made by burning" is from 1520s. Slow burn first attested 1938, in reference to U.S. movie actor Edgar Kennedy (1890-1948), who made it his specialty.
c.1300, "impression, mark" (as by a stamp or seal), from Old French preinte "impression," noun use of fem. past participle of preindre "to press, crush," altered from prembre, from Latin premere "to press" (see press (v.1)). The Old French word also was borrowed into Middle Dutch (prente, Dutch prent) and other Germanic languages.
Meaning "printed lettering" is from 1620s; print-hand "print-like handwriting" is from 1658. Sense of "picture or design from a block or plate" is first attested 1660s. Meaning "piece of printed cloth" is from 1756. In Middle English, stigmata were called precious prentes of crist; to perceiven the print of sight was "to feel (someone's) gaze." Out of print "no longer to be had from the publisher" is from 1670s (to be in print is recorded from late 15c.). Print journalism attested from 1962.
mid-14c., prenten "to make an impression" (as with a seal, stamp, etc.), from print (n.). Meaning "to set a mark on any surface" (including by writing) is attested from late 14c. Meaning "to run off on a press" is recorded from 1510s (Caxton, 1474, used enprynte in this sense). In reference to textiles, 1580s. The photography sense is recorded from 1851 (the noun in this sense is from 1853). Meaning "to write in imitation of typography" is from 1801.
He always prints, I know, 'cos he learnt writin' from the large bills in the bookin' offices. [Charles Dickens, "Pickwick Papers," 1837]The meaning "to record (someone's) fingerprints" is from 1952. Related: Printed; printing.
v. burned or burnt (bûrnt), burn·ing, burns
To undergo or cause to undergo combustion.
To consume or use as fuel or energy.
To damage or injure by fire, heat, radiation, electricity, or a caustic agent.
To irritate or inflame, as by chafing or sunburn.
To become sunburned or windburned.
To metabolize a substance, such as glucose, in the body.
To impart a sensation of intense heat to.
To feel or look hot.
An injury produced by fire, heat, radiation, electricity, or a caustic agent.
A burned place or area.
The process or result of burning.
A stinging sensation.
A sunburn or windburn.
Noun Tissue injury caused by fire, heat, radiation (such as sun exposure), electricity, or a caustic chemical agent. Burns are classified according to the degree of tissue damage, which can include redness, blisters, skin edema and loss of sensation. Bacterial infection is a serious and sometimes fatal complication of severe burns.
One who makes things unnecessarily complicated and obfuscates matters
[1834+; fr a traditional reputation for the shrewdness of such attorneys, and the phrase it would puzzle a Philadelphia lawyer, found by 1788]
An exclamation of delight at a successful insult (1980s+Students)noun