Surprise!
verminous
solo
There are far worse than “solo”, sometimes it’s even preferable. 
Anomalous.
Legalistic.
Injurious.
Wretched.
Misaimed.
Biannual
Defenesterizing (the act itself is exciting, but it doesn’t end well)
Cross-threaded
Flammable
“nasty brutish and short”
"
Oh, you’ve been with my wife, then?
Anachronistic
With my ex: more hang-ups than a line full of drying laundry. Hence: EX
Freudian.
Tired
Lackluster
Boring
Underpaid.
Solitary