late Old English plot "small piece of ground of defined shape," a word of unknown origin. The sense of "ground plan," and thus "map, chart, survey of a field, farm, etc." is from 1550s. Plat is a Middle English collateral form. The meaning "a secret, plan, fully formulated scheme" (usually to accomplish some evil purpose) is from 1580s, probably by accidental similarity to complot, from Old French complot "combined plan" (compare the sense evolution of plan), itself a word of unknown origin, perhaps a back-formation from compeloter "to roll into a ball," from pelote "ball." OED says "The usage probably became widely known in connexion with the 'Gunpowder Plot.' "
The meaning "set of events in a story, play, novel, etc." is from 1640s. Plot-line (n.) "main features of a story" is attested by 1940; earlier, in theater, "a sentence containing matter essential to the comprehension of the play's story" (1907).
early 15c., "act of looking into the distance, condition of facing something else or a certain direction," from Latin prospectus "distant view, look out; sight, faculty of sight," noun use of past participle of prospicere "look out on, look forward," from pro "forward" (see pro-) + specere "look at" (from PIE root *spek- "to observe").
The meaning "extensive view of the landscape, view of things within the reach of the eye" is from 1530s; transferred sense of "mental view or survey" is from 1620s. The meaning "that which is presented to the eye, scene" is from 1630s.
The sense of "person or thing considered promising" is from 1922, from the earlier sense of "expectation, ground of expectation," especially of advantage (1660s) on the notion of "looking forward," hence "anticipation." Hence prospects "things looked forward to." The meaning "a wide, long, straight street or avenue" is by 1866, in a Russian context, and thus often spelled prospekt.
It forms all or part of: adorn; alarm; aristarchy; aristo-; aristocracy; arm (n.1) "upper limb of the body;" arm (n.2) "weapon;" armada; armadillo; armament; armature; armilla; armistice; armoire; armor; armory; army; art (n.) "skill as a result of learning or practice;" arthralgia; arthritis; arthro-; arthropod; arthroscopy; article; articulate; artifact; artifice; artisan; artist; coordination; disarm; gendarme; harmony; inert; inertia; inordinate; ordain; order; ordinal; ordinance; ordinary; ordinate; ordnance; ornament; ornate; primordial; subordinate; suborn.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit irmah "arm," rtih "manner, mode;" Armenian arnam "make," armukn "elbow;" Greek arti "just," artios "complete, suitable," artizein "to prepare," arthron "a joint;" Latin ars (stem art-) "art, skill, craft," armus "shoulder," artus "joint," arma "weapons;" Old Prussian irmo "arm;" German art "manner, mode."
It forms all or part of: advice; advise; belvedere; clairvoyant; deja vu; Druid; eidetic; eidolon; envy; evident; guide; guidon; guise; guy (n.1) "small rope, chain, wire;" Gwendolyn; Hades; history; idea; ideo-; idol; idyll; improvisation; improvise; interview; invidious; kaleidoscope; -oid; penguin; polyhistor; prevision; provide; providence; prudent; purvey; purview; review; revise; Rig Veda; story (n.1) "connected account or narration of some happening;" supervise; survey; twit; unwitting; Veda; vide; view; visa; visage; vision; visit; visor; vista; voyeur; wise (adj.) "learned, sagacious, cunning;" wise (n.) "way of proceeding, manner;" wisdom; wiseacre; wit (n.) "mental capacity;" wit (v.) "to know;" witenagemot; witting; wot.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit veda "I know;" Avestan vaeda "I know;" Greek oida, Doric woida "I know," idein "to see;" Old Irish fis "vision," find "white," i.e. "clearly seen," fiuss "knowledge;" Welsh gwyn, Gaulish vindos, Breton gwenn "white;" Gothic, Old Swedish, Old English witan "to know;" Gothic weitan "to see;" English wise, German wissen "to know;" Lithuanian vysti "to see;" Bulgarian vidya "I see;" Polish widzieć "to see," wiedzieć "to know;" Russian videt' "to see," vest' "news," Old Russian vedat' "to know."
Old English smæl "thin, slender, narrow; fine," from Proto-Germanic *smal- "small animal; small" (source also of Old Saxon, Danish, Swedish, Middle Dutch, Dutch, Old High German smal, Old Frisian smel, German schmal "narrow, slender," Gothic smalista "smallest," Old Norse smali "small cattle, sheep"), perhaps from a PIE root *(s)melo- "smaller animal" (source also of Greek melon, Old Irish mil "a small animal;" Old Church Slavonic malu "bad"). Original sense of "narrow" now almost obsolete, except in reference to waistline and intestines.
My sister ... is as white as a lilly, and as small as a wand. [Shakespeare, "Two Gentlemen of Verona," 1591]
Sense of "not large, of little size" developed in Old English. Of children, "young," from mid-13c. Meaning "inferior in degree or amount" is from late 13c. Meaning "trivial, unimportant" is from mid-14c. Sense of "having little property or trade" is from 1746. That of "characterized by littleness of mind or spirit, base, low, mean" is from 1824. As an adverb by late 14c.
Small fry, first recorded 1690s of little fish, 1885 of insignificant people. Small potatoes "no great matter, something petty or insignificant" is attested by 1924; small change "something of little value" is from 1902; small talk "chit-chat, trifling conversation" (1751) first recorded in Chesterfield's "Letters." Small world as a comment upon an unexpected meeting of acquaintances is recorded from 1895. Small-arms, indicating those capable of being carried in the hand (contrasted to ordnance) is recorded from 1710.