1. Demanding strict attention to rules and procedures
   "stringent safety measures"
   - rigorous, tight

See also: demanding, stringency, stringently

• outward
• outward-bound
• outward-developing
• outward-moving
• outwardly
• outwardness
• outwards
• outwear
• outweigh
• outweird
• outwit
• outwith
• outwork
• ouzel
• ouzo
• OV
• oval
• oval kumquat
• Oval Office
• oval window
• oval-bodied
• oval-fruited
• oval-shaped
• ovalbumin
• Ovalipes