infrequent

/(ˌ)in-ˈfrē-kwənt/

Latin infrequent-, infrequens, from in- + frequent-, frequens frequent

adjective

  1. seldom happening or occurring : rare

  2. placed or occurring at wide intervals in space or time

infrequent uncommon scarce rare sporadic mean not common or abundant. infrequent implies occurrence at wide intervals in space or time. uncommon suggests a frequency below normal expectation.

idiom

  1. occurring rather often : common

Problems with the network have become a not infrequent occurrence.