infelicitous
1. [ adjective ] marked by or producing unhappiness
Synonyms: unhappy
Examples:

"infelicitous circumstances" "unhappy caravans, straggling afoot through swamps and canebrakes"- American Guide Series

Related terms: unfortunate
2. [ adjective ] not appropriate in application; defective
Examples:

"an infelicitous remark" "infelicitous phrasing" "the infelicitous typesetting was due to illegible copy"

Related terms: felicitous awkward awkward unfortunate unhappy felicity
Similar spelling:   infelicitously
  infelicity
  invalidism
  invalidator