unfrequency

== English == === Etymology === From unfrequent +‎ -cy. === Pronunciation === Hyphenation: un‧fre‧quen‧cy === Noun === unfrequency (uncountable) Obsolete form of infrequency. 1761, Gilbert Burnet, Thoughts on Education[1], London: D. Wilson, page 44: The unfrequency of the exercising boyes in versions and translations, is also a great error: for this will be found a better mean to inure them to Latine than either grammaires, lessons, or confabulations.