Antonyms of adj certifiable

2 senses of certifiable

Sense 1
certifiable, certified -- (fit to be certified as insane (and treated accordingly))

INDIRECT (VIA insane) -> sane -- (mentally healthy; free from mental disorder; "appears to be completely sane")

Sense 2
certifiable -- (capable of being guaranteed or certified; "a certifiable fact")

INDIRECT (VIA certified) -> uncertified -- (lacking requisite official documentation or endorsement)

Similarity of adj certifiable

2 senses of certifiable

Sense 1
certifiable, certified -- (fit to be certified as insane (and treated accordingly))
       => insane (vs. sane) -- (afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter")

Sense 2
certifiable -- (capable of being guaranteed or certified; "a certifiable fact")
       => certified (vs. uncertified) -- (endorsed authoritatively as having met certain requirements; "a certified public accountant")