contributory (adj.)
- accessory
- additional
- adjuvant
- ancillary
- another
- appurtenant
- auxiliary
- beneficial
- collateral
- concessive
- conducive
- constructive
- extra
- farther
- fresh
- further
- helpful
- intestate
- more
- new
- other
- plus
- positive
- profitable
- remedial
- salutary
- serviceable
- spare
- subservient
- subsidiary
- supernumerary
- supplemental
- supplementary
- surplus
- testamentary
- testate
- therapeutic
- ulterior
- useful
