1. Not permissibly
   "the radon level in the basement was impermissibly high"

See also: impermissible

Antonym: permissibly

• compiling
• compiling program
• complacence
• complacency
• complacent
• complacently
• complain
• complainant
• complainer
• complaining
• complainingly
• complaint
• complaintive
• complaisance
• complaisant
• complect
• complement
• complement fixation
• complement fixation test
• complemental
• complementarity
• complementary
• complementary angles
• complementary color
• complementary colour