: a shrewd, unprincipled person
“Truman lamented that Dwight Eisenhower had given in to congressional “snollygosters“—unprincipled politicians.—Orme Wilson”
This is a quote I found on the Merriam Webster Dictionary website. I was going to talk about the word “gumption” which is today’s word of the day. I was sidetracked when I saw that snollygoster is the current top word look-up at this website. I did not know what it meant, so I looked it up. I found the above quote. I tried to look up Orme Wilson since I did not recognize this name. I found that there was more than one Orme Wilson, so I searched who was the Orme Wilson that used the word “snollygoster” to describe politicians. I found this:
“President Harry S. Truman. Truman lamented in his personal correspondence and speeches that Dwight D. Eisenhower had surrendered to congressional “snollygosters”—which he defined as unprincipled, shrewd politicians who care more about getting into office than about party, platform, or principles. Because Orme Wilson Jr. was a prominent diplomat during the Truman era, his papers, letters, or related historical records are cited by lexicographers as the source material verifying Truman’s use of the word.” I found this quote from Wikipedia.
According to Merriam Webster, the word can be traced back to the word “snallygaster” which was a mythical creature. Etymology– “probably alteration of snallygaster a mythical creature that preys on poultry and children.”

In case you are more interested in the word “gumption”, here is the link: Definition of gumption.