Is it ensure, insure, or assure?
"place in a stable for animals," Old English steall "place where cattle are kept, place, position," from Proto-Germanic *stallaz (cf. Old Norse stallr "pedestal for idols, altar," Old Frisian stal, Old High German stall "stand, place, stable, stall," German Stall "stable," Stelle "place"), earlier *stalnaz- or *stathlo-, from PIE root *stel- "to put, stand," with derivatives referring to a standing object or place (cf. Greek stele "standing block, slab," Latin stolidus "insensible, dull, brutish," properly "unmovable").
The word passed into Romanic languages (cf. Italian stallo "place," stalla "stable;" Old French estal "place, position, stand, stall," French étal "butcher's stall"). Several meanings, including that of "a stand for selling" (mid-13c., implied in stallage "tax levied for the privilege of erecting a stall at a market or fair"), are from (or influenced by) Old French estal. Meaning "partially enclosed seat in a choir" is attested from c.1400; that of "urinal in a men's room" is from 1967.
"pretense to avoid doing something," variant of stale "bird used as a decoy to lure other birds" (mid-15c.), from Anglo-French estale "decoy, pigeon used to lure a hawk" (13c., cf. stool pigeon), literally "standstill," from Old French estal "place, stand, stall," from Frankish *stal- "position," cognate with Old English steall (see stall (n.1)).
Cf. Old English stælhran "decoy reindeer," German stellvogel "decoy bird." Figurative sense of "deception, means of allurement" is first recorded 1520s. Meaning "evasive trick or story, pretext, excuse" first recorded 1812 (see stall (v.)); sense entwined with that of "thief's assistant" (1590s).
The stallers up are gratified with such part of the gains acquired as the liberality of the knuckling gentlemen may prompt them to bestow. [J.H. Vaux, "Flash Dictionary," 1812]
1590s, "to screen a pickpocket from observation," from stall (n.2) "decoy." Meaning "to precaricate, be evasive, play for time" is attested from 1903. Of engines or engine-powered vehicles, it is attested from 1904 (transitive), 1914 (intransitive), from earlier sense of "to become stuck, come to a standstill" (c.1400), which is directly from Old French estale or Old English steall (see stall (n.1)). Related: Stalled; stalling.
To give or provide something to someone, inferentially as a loan: Could you stake me to a new suit so I can get a job?
[1853+; fr the earlier senses where stake meant someone's basic provisions for farming, prospecting, etc]
To harass someone, esp a woman, in a menacing way: During the first week at Wimbledon, a German stalking Steffi Graf had to be expelled/ The clinics have recourse to local laws against blocking an entrance and stalking doctors and nurses/ A 9-year old boy who left a message for a 10-year old girl has been accused of violating the state's anti-stalking law (1980s+)