dumbover
A reduced IQ that is the result of having smoked marijuana the night before. Similar to a hangover, but not unpleasant.
Sorry I'm acting really stupid this morning; I smoked last night and I have a dumbover.
Dumbovative
The opposite of innovative.
To say that ‘this is the way we’ve always done it, so it must be the best way’ is dumbovative.