NPR Sunday Puzzle (Jan 31, 2021): Driving Across the USAQ: Starting in Montana, you can drive into South Dakota and then into Iowa. Those three states have the postal abbreviations MT, SD, and IA — whose letters can be rearranged to spell AMIDST. The challenge is to do this with four connected states to make an eight-letter word. That is, start in a certain state, drive to another, then another, and then another. Take the postal abbreviations of the four states you visit, mix the letters up, and use them to spell a common eight-letter word. Can you do this?
I'm using a list of states directly connected by physical roads/bridges. This leaves out states that might legally touch on a map (e.g. UT-NM, AZ-CO, MI-MN, NY-RI, etc.). But even still, I'm not convinced there is only one answer. I guess it comes down to your definition of "common".
Edit: Unless there is some further restriction, I have at least 6 words that I consider common, 3 more if you allow an added S.
A:
Common words:
animator (IA-MO-AR-TN)
condemns (SD-NE-CO-NM)
diamonds (ND-SD-IA-MO)
diocesan (SD-IA-NE-CO)
dioramas (SD-IA-MO-AR)
flagrant (AR-TN-GA-FL)
nominate (NE-IA-MO-TN)
ornament (AR-TN-MO-NE)
ransomed (SD-NE-MO-AR)
Less common words:
contused (UT-CO-NE-SD)
diaphone (IN-OH-PA-DE)
eduction (ID-UT-CO-NE)
galavant (GA-AL-TN-VA)
magneton (NE-MO-TN-GA)
mediants (MT-SD-NE-IA)
moleskin (NE-KS-MO-IL)
moralism (IL-MO-AR-MS)
nomadism (SD-MN-IA-MO)
nonmetal (NE-MO-TN-AL)
saintdom (SD-IA-MO-TN)
tangrams (MS-AR-TN-GA)
Uncommon words:
coenamor (CO-NE-MO-AR)
domaines (SD-NE-IA-MO)
makimono (NM-OK-MO-IA)
martagon (MO-AR-TN-GA)
matronal (MO-AR-TN-AL)
monecian (CO-NE-IA-MN)
takingly (IL-KY-TN-GA)