Collocations for careless - adj.

be
become, get, grow
She had begun to grow careless.

make sb
Boredom made him careless.

extremely, rather, very
a rather careless mistake

how, so, too
Try not to be so careless in the future.

a little, slightly, etc.

about
She's careless about her spelling.

of
When performing his stunts he was careless of his own safety.

with
He's very careless with money.

Careless is used with these nouns:
act, driving, error, hand, handling, mistake, pass, remark, shrug, talk