Etymology
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overpopulate (v.)

also over-populate, "to overrun with too many people," 1828 (implied in overpopulated), from over- + populate (v.). Related: Overpopulating. Overpopulous "over-populated" is attested from 1670s.

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overrun (v.)

also over-run, Middle English overrennen, from Old English oferyrnan "to run across, pass over;" see over- + run (v.). Meaning "continue beyond a specified time" is from early 14c. Meaning "to ravage (a land), maraud, plunder" is by mid-14c. Of weeds, etc., "to grow over, cover all over," by 1660s. The noun meaning "excess expenditure over budget" is from 1956. Related: Overran; overrunning.

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overpass (n.)

"stretch of road that passes over another," 1929, American English, from over- + pass (v.). + Overpass has been a verb since late c. 1300, "to go over, go across."

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hyper- 
word-forming element meaning "over, above, beyond," and often implying "exceedingly, to excess," from Greek hyper (prep. and adv.) "over, beyond, overmuch, above measure," from PIE root *uper "over."
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transitive (adj.)
"taking a direct object" (of verbs), 1570s (implied in transitively), from Late Latin transitivus (Priscian) "transitive," literally "passing over (to another person)," from transire "cross over, go over, pass over, hasten over, pass away," from trans "across, beyond" (see trans-) + ire "to go" (from PIE root *ei- "to go"). Related: Transitively.
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transit (n.)
Origin and meaning of transit
mid-15c., "act or fact of passing across or through," from Latin transitus "a going over, passing over, passage," verbal noun from past participle of transire "cross over, go over, pass over, hasten over, pass away," from trans "across, beyond" (see trans-) + ire "to go" (from PIE root *ei- "to go"). Meaning "a transit of a planet across the sun" is from 1660s. Meaning "public transportation" is attested from 1873.
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overexcitement (n.)

also over-excitement, "excess of excitement," 1815, from over- + excitement.

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overnice (adj.)

also over-nice, "fastidious," early 14c., from over- + nice (adj.).

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overtrouble (v.)

also over-trouble, "to trouble excessively," 1580s, from over- + trouble (v.). Related: Overtroubled; overtroubling.

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*uper 
Proto-Indo-European root meaning "over."

It forms all or part of: hyper-; insuperable; over; over-; sirloin; somersault; soprano; soubrette; sovereign; sum; summit; super-; superable; superb; superior; supernal; supra-; supreme; sur-.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit upari, Avestan upairi "over, above, beyond;" Greek hyper, Latin super "above, over;" Old English ofer "over," German über, Gothic ufaro "over, across;" Gaulish ver-, Old Irish for.
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