Shucks is an old-fashioned American exclamation of bashful modesty. Aw shucks, shucks, it was nothing, well shucks.
It is what somebody says when praised and slightly embarrassed by it, and aw shucks has become a whole manner — a studied modesty that may or may not be genuine. It also expresses mild disappointment, where a stronger word would be rude.
1nounshucksAn exclamation of bashful modesty or gentle disappointment.
“"Oh, shucks, I've missed the bus again," she sighed.”
shucks is an exclamation.
From shuck, a husk or something of no value, so shucks means the thing was worth nothing.
Built from
From shuck (“something valueless”).
Etymology from Wiktionary, CC BY-SA