subtraction (n.)
- abatement
- abridgment
- absence
- abstraction
- addition
- alienation
- alleviation
- approximation
- attenuation
- awayness
- blank
- contraction
- dampening
- decrease
- decrement
- deduction
- deflation
- depreciation
- depression
- deprivation
- detachment
- differentiation
- diminution
- disassociation
- disconnectedness
- disconnection
- discontinuity
- discount
- disengagement
- disjunction
- dislocation
- disunion
- division
- divorce
- divorcement
- dying
- equation
- evolution
- extenuation
- extrapolation
- incoherence
- integration
- interpolation
- inversion
- involution
- isolation
- lack
- lessening
- letup
- lowering
- luxation
- miniaturization
- mitigation
- multiplication
- nonexistence
- nonoccurrence
- notation
- parting
- partition
- practice
- proportion
- rebate
- reduction
- relaxation
- removal
- segmentation
- separation
- separatism
- simplicity
- subdivision
- transformation
- want
- weakening
- withdrawal
- zoning