reciprocal (n.)
- aliquot
- ally
- alternate
- analogue
- associate
- beating
- brother
- cardinal
- coefficient
- cognate
- collective
- collectivist
- commensal
- common
- communist
- companion
- complement
- complementary
- congenator
- congener
- convertible
- cooperative
- coordinate
- correlate
- correlative
- correspondent
- counterpart
- cyclic
- decimal
- differential
- double
- duplicate
- equal
- equivalent
- even
- exponential
- fellow
- finite
- general
- give-and-take
- image
- imaginary
- impossible
- infinite
- integral
- irrational
- joint
- like
- likeness
- match
- mate
- negative
- numeral
- numerary
- obverse
- odd
- ordinal
- pair
- parallel
- pendant
- periodical
- picture
- positive
- possible
- prime
- public
- pulsing
- radical
- rational
- real
- rhythmic
- rotary
- seasonal
- seesaw
- serial
- similitude
- simulacrum
- sister
- social
- standard
- steady
- such
- surd
- tally
- twin
- wheeling
reciprocal (adj.)
- algorithmic
- aliquot
- ally
- alternate
- analogous
- analogue
- answering
- associate
- cardinal
- changeable
- circling
- coequal
- cognate
- collaborative
- collective
- collectivist
- collectivistic
- collusive
- combined
- commensal
- common
- communal
- communist
- communistic
- commutable
- commutative
- complemental
- complementary
- concerted
- concordant
- concurrent
- concurring
- conjoint
- conniving
- convertible
- cooperative
- coordinate
- correlate
- correlative
- correspondent
- corresponding
- cyclic
- decimal
- differential
- digital
- double
- duplicate
- ecumenic
- epochal
- equal
- equivalent
- even
- exchanged
- exponential
- fellow
- figural
- figurative
- finite
- fractional
- general
- harmonious
- harmonized
- homologous
- imaginary
- impossible
- infinite
- integral
- interchangeable
- intermittent
- irrational
- isochronal
- joint
- like
- logarithmic
- mate
- measured
- mutual
- negative
- noncompetitive
- numeral
- numerary
- numeric
- odd
- ordinal
- oscillatory
- parallel
- pendant
- periodical
- permutable
- popular
- positive
- possible
- prime
- public
- punitive
- radical
- rational
- real
- reciprocating
- reciprocative
- recurrent
- recurring
- reparative
- retaliative
- retaliatory
- retributive
- retributory
- returnable
- rhythmic
- rotary
- seasonal
- serial
- shared
- social
- socialistic
- societal
- standard
- steady
- such
- suchlike
- surd
- symbiotic
- synergetic
- synergic
- synergistic
- tantamount
- transcendental
- transposed
- twin
- uncompetitive
- undulant
- undulatory
- wavelike
- wheeling
