Icelandic Etymology Literally, “under four eyes”. Cognate or calque of Danish under fire øjne, a cognate of German unter vier Augen. Adverb undir fjögur augu (idiomatic) discussing in private; for two people to discuss without others present Mætti ég ræða við þig undir fjögur augu? ― Could I talk to you in private? See also í trúnaði (“confidentially”)Wikiwand - on Seamless Wikipedia browsing. On steroids.