slapdash

Short definition from Wiktionary

Adjective

1. 1
   Produced or carried out hastily; haphazard; careless.

Adverb

1. 1
   In a hasty or careless manner.
2. 2
   Directly, right there; slap-bang.
3. 3
   With a slap; all at once; slap.

Verb

1. 1
   To apply, or apply something to, in a hasty, careless, or rough manner; to roughcast.