perceptible
apparent
appreciable
arresting
believable
certain
clear
clear as crystal
colorable
concrete
credible
crystal-clear
detectable
discernible
distinct
evident
explicit
express
gross
indisputable
indubitable
intelligible
manifest
material
noticeable
observable
obvious
open-and-shut
ostensible
patent
perceivable
perspicuous
plain
plain as day
plausible
ponderable
positive
real
remarkable
seeable
seeming
self-evident
self-explaining
deliberate
flagrant
inexplicable
momentary
overwhelm
profound
tangible
undeniable
unmistakable