(a.) Admissible lawfully into the mail.

allowable assignable bequeathable bestowable catching conductive consignable contagious conveyable deadly destructive devisable endemic envenomed epidemial epidemic epiphytotic epizootic expansive expressable giveable impartable infectious infective inoculable interchangeable mailable malign malignant mephitic metathetic miasmal miasmatic miasmic movable noxious pandemic pestiferous pestilential poisonous portable portative presentable removable sporadic spreading taking toxic toxicant toxiferous transferable transfusable transmissible transmissive transmittable transportable transportative transposable venenate veneniferous venenous venomous virulent zymotic