ancillary (adj.)

• accessory
• accompanying
• additional
• adjuvant
• another
• appurtenant
• assistant
• attendant
• auxiliary
• coincident
• collateral
• contributory
• extra
• farther
• fresh
• further
• incident
• instrumental
• ministerial
• ministrant
• more
• new
• nurtural
• other
• plus
• satellite
• serving
• spare
• subservient
• subsidiary
• supernumerary
• supplemental
• supplementary
• surplus
• ulterior