Like shipping and handling, typically: Abbr., 4 letters
Not included: Abbr., 4 letters
Supplementary (abbr.), 4 letters
Become rotten, as eggs, 5 letters
Confuse Garfield, dashing back inside (5), 5 letters
Confuse Spot, led astray (5), 5 letters
Pull a switcheroo on, 5 letters
Scramble, as brains, 5 letters
Throw into confusion, 5 letters
Mess up a mathematician by shouting random numbers?, 10 letters
Confused, and this puzzle's title, 6 letters
Thoroughly confused, 6 letters
Messed up one's undercover assignment?, 17 letters
Throws into confusion, 6 letters
Increase zest, with to, 7 letters