The adjective indiscriminate means an action that is not showing careful choice or preparation.
Synonyms are chaotic, random, aimless, or extensive.
The word origins from 1640s, from in– meaning “not, opposite of” plus discriminate meaning “evaluate, discern”.
Indiscriminate firing must be banned during New Year’s eve.
He is such an indiscriminate buyer.
She has an indiscriminate taste when it comes to choosing someone to date.