I’ve been calling them ne’er-do-wells lately, or sometimes layabouts.
rapscallions , knaves, scamps
knaves is a new one for me, thanks.
Scallywags
Malcontents
This one is going on the list.
Rabble-rousers
Milquetoast dandies.
Scrimshankers! I always imagine that word in Mr Burns’ voice for some reason.
whippersnappers
Jackanapes
Ruffians, roustabouts
Gadabouts
It might not be quite what you’re looking for but some of these maybe.
https://arapahoelibraries.org/blogs/post/names-for-groups-of-animals/
Nothing a teenager loves more than learning something along the way
Vagabonds is a good one.
Blodgers (use Australian accent) Bloh-jah!
Point of order, OP asked for disused words, not frequently used words.
An odd one, but my physics teacher would address us as ‘mollusc’ :D
Not so much disused but rarely used these days:
-
Nincompoop. (Fun fact: it’s a mangling of Latin “non compos mentis” = “not of sound mind”)
-
Gibbering wretch.
-
Navel starer.
-
Halfwit.
-
Dunce
Actually rare / disused:
- Flibbertygibbet. Means “airhead” which itself is a kind of weird word, but is better known. Both usually applied to girls and young women, but can also be used for males, etc.
-