From Middle English seen, from Old English sēon (“to see, look, behold, perceive, observe, discern, understand, know”), from Proto-West Germanic *sehwan, from Proto-Germanic *sehwaną (“to see”), from Proto-Indo-European *sekʷ- (“to see, notice”). Etymology 1 sense 9 is a calque of Latin vidē (“see (thou)”, 2ⁿᵈ person singular imperative), which was also borrowed into academic English (see vide) as well as Portuguese. Cognates Cognate with Scots see, sei (“to see”), Yola sau, ze, zee, zey, zie (“to see”), North Frisian se, si, siin, siine, siinj, sä, säie (“to see”), Saterland Frisian sjo (“to see”), West Frisian sjen (“to see”), Bavarian segn (“to see”), Central Franconian sehn, senn (“to see”), Dutch zien (“to see”), Low German sehn (“to see; to look”), German sehen (“to see”), Limburgish séëne, zeen (“to see”), Luxembourgish gesinn (“to see”), Alemannic German gseh (“to see”), Mòcheno sechen (“to see”), Vilamovian zaon (“to see”), Yiddish זען (zen, “to see”), Danish, Norwegian Bokmål, and Swedish se (“to see”), Elfdalian sją̊ (“to see”), Faroese síggja (“to see”), Icelandic sjá (“to see”), Norwegian Nynorsk sjå (“to see”), sia (“to foretell”), Gothic 𐍃𐌰𐌹𐍈𐌰𐌽 (saiƕan, “to see”), and more distantly with Albanian shof, shoh (“to see”), Latin secūtus, sequūtus (“followed”), Ancient Greek ἕπομαι (hépomai, “to follow, obey”), Persian ا (a), از (az), ز (ze, “from, of”), Luwian 𒁕𒀀𒌋𒄿𒅖 (“eye”), Sanskrit सच् (sac, “to be associated with, familiar with, have to do with”).

look • well • so • account • adjudge • appraise • archbishopric • ascertain • assure • attend • believe • bishop's see • catch • censure • Check • comprehend • consult • Date • Discover • dub • esteem • Fancy • follow • get • go • go out • go with • hey presto • imagine • judge • Learn • look upon • lookit • mark • -oth • recognise • recognize • respect • thank gods • undergo • understand • understand sth. • walk out • Witness