1. Not often
   "we rarely met"
   - seldom, seldomly [non-standard]

See also: rare

Antonym: often

• keratotomy
• kerb
• kerb crawler
• kerb crawling
• Kerbala
• Kerbela
• kerbside
• kerbstone
• kerchief
• Kerensky
• kerf
• kerfuffle
• kerion
• kermes
• kermes oak
• kern
• kernel
• kernicterus
• Kernig's sign
• kerning
• kernite
• kerosene
• kerosene heater
• kerosene lamp
• kerosine