Thread by @AdamCSharp

Criminally underused old words:

7. Poop-noddy (a fool)
6. Fribbler (a commitment-phobe)
5. Gongoozle (to stare at a canal)
4. Mubble-fubbles (depression)
3. Vampirarchy (like the patriarchy, but with vampires)
2. Gong-hole (toilet)
1. Unbepissed (not yet soaked with urine)

Some unbelievably tremendous old words:

7. Betrump (to cheat and deceive)
6. Geolucrog (orange)
5. Jingle-boy (a rich man)
4. Mumpsimus (a bigoted opponent of reform)
3. Peacockize (strutting and posing)
2. Blatteration (foolish talk)
1. Orgiophant (one who presides over orgies)

Yet more useful old words:

7. Whangdoodle (a ranter)
6. Grinagog (someone who's constantly grinning)
5. Flosculations (embellishments)
4. Quibbleism (the act of quibbling)
3. Boreism (the condition of being a bore)
2. Fadoodle (nonsense)
1. Slubberdegullion (a worthless wretch)

Final list (for now) of important old words:

7. Snudging (pacing about pretending to be busy)
6. Beazled (exhausted)
5. All-overish (unwell everywhere)
4. Namelings (people with same name)
3. Happify (to make happy)
2. Uglyography (bad handwriting)
1. Wonder-wench (pretty woman)