cyclic
Word family
Synonym discussion
Sense: adjective/1
Cyclic and periodic both describe events that occur at regular intervals, but cyclic emphasises a sequence that returns to its starting point before beginning again — like economic booms and busts or the changing seasons. Periodic focuses on the fixed time interval between occurrences, regardless of whether the events form a closed loop: a periodic health check-up happens every six months but does not 'cycle back' to an earlier condition. Recurring simply means something happens repeatedly but guarantees no fixed schedule or pattern — headaches may recur at random. Repeated means something happens more than once, often identically, without implying any rhythm at all. For example: the housing market follows a cyclic boom-and-bust pattern; she made periodic visits to her dentist every six months; the same software bug kept recurring despite updates; the teacher gave repeated warnings about late assignments.
Common collocations
Etymology
The word cyclic traces back to the Greek 'kyklos', meaning 'circle' or 'ring'. This passed into Latin as 'cyclus', then into French as 'cyclique', and entered English in the early 1800s. The same Greek root also gave us 'cycle', 'bicycle', and 'encyclopedia' (from 'enkyklios paideia', meaning 'circular education').