Etymology
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influx (n.)
1620s, from French influx (16c.) or directly from Late Latin influxus "a flowing in," from past participle stem of Latin influere "to flow in" (see influence (n.)). Originally of rivers, air, light, spiritual light, etc.; used of people from 1650s.
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inflow (n.)

"act of flowing in or into; that which flows in, influx," 1839, from in (adj.) + flow (n.).

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inset (n.)
1550s, "influx of water; place where water flows in," from in (prep.) + set (n.2). The sense "that which is set in" ("extra pages of a book, etc.," 1871; "small map in the border of a larger one," 1872) probably is a separate formation. In Old English insetan (Old Northumbrian insetta) meant "an institution," literally "a setting in," and perhaps a loan-translation of the source of institution. Similar formation in German einsetzen "to use, employ; institute, begin; install."
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drown (v.)

early 14c., drounen, "suffocate by immersion in water or other fluid," also intransitive, "be suffocated by immersion (etc.)," also figurative, "to overwhelm or overpower by rising above as a flood," perhaps from an unrecorded variant of Old English druncnian (Middle English druncnen) "be swallowed up by water" (originally of ships as well as living things); at any rate it is probably from the base of drincan "to drink" (see drink (v.) and compare drench).

Or perhaps it is from Old Norse drukna "be drowned," which has at least influenced the modern form of the word, via North of England dialect. Related: Drowned; drowning. To drown (someone or something) out formerly was "to force to come out by influx of water;" in reference to sounds, by 1884.

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