At the first blush. At the first glance; speakingoff-hand without having given the subject mature deliberation. The allusion is to blushing at some sudden or unexpected allusion; the first time the thought has flashed into your mind.
To put to the blush. To make one blush with shame, annoyance, or confusion.
“England might blush in 1620, when Englishment trembled at a fool’s frown [i.e. James I.], but not in 1619, when an enraged peoplecutoff his son’s [Charles I.] head.”—Wendell Phillips: Orations, p. 419.
· 
· 