1. Not returned in kind
   "unrequited (unanswered) love"
   - unreciprocated, unrequited

See also: nonreciprocal

• incorrectness
• incorrigibility
• incorrigible
• incorrigibly
• incorrupt
• incorruptibility
• incorruptible
• incorruptibly
• incorruption
• incorruptness
• increase
• increased
• increasement
• increasing
• increasing monotonic
• increasingly
• incredibility
• incredible
• incredibleness
• incredibly
• incredulity
• incredulous
• incredulously
• increment
• incremental