Careless
Part of speech: adjective
Definition: Free from care; unworried, without anxiety. Not concerned or worried (about). Not giving sufficient attention or thought, especially concerning the avoidance of harm or mistakes.
Example sentence: I hate careless flattery, the kind that exhausts you in your efforts to believe it.
Cursory
Part of speech: adjective
Definition: Brief or broad; not close, cautious nor detailed.