Answer:

alleger

AnswerCrossword Clue
ALLEGERAccusatory one
ALLEGERHe quotes without proof.
ALLEGERAsserter.
ALLEGEROne who states positively.
ALLEGEROne asserting without proof.
ALLEGERPlaintiff, e.g.
ALLEGERProsecuting attorney's role
ALLEGERInsinuator
ALLEGERAccuser, perhaps