1. Incapable of being retracted or revoked
   - irrevocable

See also: sealed

• semipro
• semiprofessional
• semipublic
• semiquaver
• semirigid
• semiskilled
• semisoft
• semisolid
• semisweet
• semisynthetic
• Semite
• semiterrestrial
• Semitic
• Semitic deity
• Semitic-speaking
• Semitism
• semitone
• semitrailer
• semitrance
• semitransparency
• semitransparent
• semitropic
• semitropical
• semitropics
• semivowel