ETYM Latin ambiguus, from ambigere to wander about, waver; amb- + agere to drive.
1. Having more than one possible meaning.
2. (Psychology) Having no intrinsic or objective meaning; not organized in conventional patterns.
3. Of uncertain meaning.

ETYM Latin indefinitus. Related to In- not, and Definite.
1. Not decided or not known.
2. Vague or not clearly defined or stated.

ETYM Latin indistinctus: cf. French indistinct. Related to In- not, and Distinct.
Not clearly defined or easy to perceive or understand.

Not explicit.

1. Not able to perform its normal function; SYN. unusable.
2. Not suitable for surgery

Of a speech sound; having no signaling value

Giving only major points; lacking completeness; SYN. unelaborated.

Not clear to the mind.

1. Unsettled; unfixed; undetermined; indefinite; ambiguous.
2. Proceeding from no known authority; unauthenticated; uncertain.

In an indistinct manner; not clearly; confusedly; dimly.

In a vague way; SYN. mistily.