A few deponent verbs use their perfect participles almost as though they were present indicative verbs.
- They think the thing is incredible: rem incrēdibilem ratī sunt.
- He fears a mutiny: sēditiōnem veritus est.
- She encourages the women: fēmināes cohortāta est.
- She’s angry: irāta est.
Also with solitus (~is accustomed), arbitrātus (~thinks), ausus (~dares), fīsus (~trusts), secūtus (~follows).
The Essential AG: 491