im·per·mis·si·ble 
(ĭm′pər-mĭsə-bəl)
(ĭm′pər-mĭsə-bəl)adj.
Not permitted; not permissible: impermissible behavior.
im′per·mis′si·bili·ty n.
im′per·missi·bly adv.
- trichloroethene
- trichloroethylene
- tricho-
- trichocyst
- trichocystic
- trichogyne
- trichoid
- trichome
- trichomonad
- trichomonadal
- trichomonal
- trichomoniasis
- trichopteran
- trichosis
- trichotillomania
- trichotomous
- trichotomously
- trichotomy
- -trichous
- trichroic
- trichroism
- trichromacy
- trichromat
- trichromatic
- trichromatism