Words to Describe reciprocation

How reciprocation often is described ("________ reciprocation")

• dramatic
• polar
• such
• polite
• brisk
• evolutionary
• negative
• axial
• grateful
• partial
• necessary
• simple
• adequate
• fair
• distributive
• definite
• emotional
• sweet
• relevant
• vertical
• less
• somatic
• nonverbal
• formal
• exact
• benevolent
• soviet
• settled
• little
• appropriate
• rotative
• later
• rapid
• equal
• active
• contractual
• cordial
• eventual
• sly
• just
• full
• harmonious
• constant
• due
• rectilinear
• mutual
• twofold
• direct
• mere
• double
• brisker
• circular
• immediate
• endless
• indirect
• expected
• positive
• proportionate
• true
• affectionate
• intense
• transcendental
• incessant
• valuable
• actual
• hourly
• equivalent
• atrial
• possible
• perpetual
• proper
• future
• continuous
• friendly
• graduated
• quicker
• complete
• soft
• alternate
• sincere