that does not often or frequently take place , unfrequent.

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n23298.0 an entity of type: LexicalSense

that does not often or frequently take place , unfrequent. 
that does not often or frequently take place , unfrequent. 

data from the linked data cloud