authenticated (adj.)
- accepted
- acknowledged
- actual
- allowed
- approved
- ascertained
- attested
- avowed
- certain
- certified
- confessed
- confirmed
- corroborated
- demonstrated
- determined
- documentary
- effectual
- established
- factual
- fixed
- granted
- historical
- professed
- proved
- proven
- ratified
- real
- received
- recognized
- sealed
- settled
- signed
- substantiated
- sure-enough
- true
- truthful
- unquestionable
- validated
- veracious
- verified
- veritable
- warranted
