The story
From an obsolete sense of blush meaning to glance at.
Etymology from Wiktionary, CC BY-SA 4.0.
at first blush
Today it means: Upon first impression or consideration; seemingly, apparently, ostensibly. Full definition →
Today it means: Upon first impression or consideration; seemingly, apparently, ostensibly. Full definition →
From an obsolete sense of blush meaning to glance at.
Etymology from Wiktionary, CC BY-SA 4.0.