Indiscriminative is a word that describes a lack of discernment or a failure to differentiate between things. There are several synonyms that can be used in place of indiscriminative, including indiscriminate, undiscriminating, nonspecific, and unselective. Each of these words carries a slightly different connotation: indiscriminate implies random or haphazard selection, undiscriminating suggests a lack of critical judgment, nonspecific indicates a general or vague quality, and unselective implies a lack of preference or bias. Other synonyms for indiscriminative might include unrefined, undiscerning, unfocused, or unobservant, depending on the context in which the word is used.