Aware

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Old English gewær, of West Germanic origin; related to German gewahr, also to ware2.

wiktionary

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From Middle English aware, iwar, iware, ywar, from Old English ġewær(“aware”), from Proto-West Germanic *gawar, from Proto-Germanic *waraz(“aware, cautious”), from Proto-Indo-European*worós(“attentive”), from *wer-(“to heed; watch out”). Cognate with Dutch gewaar, German gewahr, Swedish var, Icelandic varr.

etymonline

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aware (adj.)

late Old English gewær "watchful, vigilant," from Proto-Germanic *ga-waraz (source also of Old Saxon giwar, Middle Dutch gheware, Old High German giwar, German gewahr), from *ga-, intensive prefix, + *waraz "wary, cautious," from PIE root *wer- (3) "perceive, watch out for."