What does "slapdash" mean?

To apply, or apply something to, in a hasty, careless, or rough manner; to roughcast.

Slapdash

Common synonyms include: carelessly, haphazard, a corps perdu, accident prone, accident-prone, aimless.

//ˈslæpdæʃ// adj, adv, verb, slang

adj, adv, verb, slang ·Common ·High school level

Verb

1
To apply, or apply something to, in a hasty, careless, or rough manner; to roughcast. colloquial
"to slapdash mortar or paint on a wall"

Adjective

1
Produced or carried out hastily; haphazard; careless.
"They had seen Poland, and that was the sort of slovenly, slapdash place they were used to, but once across the German frontier they found everything—crops, roads, buildings—uncannily different."

Adjective

Adverb

1
In a hasty or careless manner.
2
Directly, right there; slap-bang.
"Van Eyck signed his portrait of the Arnolfinis slapdash in the center of the painting."
3
With a slap; all at once; slap.
"And yet, slap dash, is all again In every sinew, nerve, and vein; Runs here and there, like Hamlet's ghost"