1. Having or using the ability to act or decide according to your own discretion or judgment
   - discretionary

See also: arbitrary

• subsidy
• subsist
• subsistence
• subsistence farming
• subsistent
• subsister
• subsoil
• subsolar
• subsonic
• subspace
• subspecies
• substance
• substance abuse
• substance abuser
• substandard
• substantia alba
• substantia grisea
• substantia nigra
• substantial
• substantialise
• substantiality
• substantialize
• substantially
• substantialness
• substantiate