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

See also: rare

Antonym: often

• unreciprocated
• unrecognisable
• unrecognisably
• unrecognised
• unrecognizable
• unrecognizably
• unrecognized
• unreconcilable
• unreconciled
• unreconstructed
• unrecorded
• unrecoverable
• unredeemable
• unredeemed
• unreduced
• unreel
• unrefined
• unreflected
• unreflective
• unreformable
• unreformed
• unrefreshed
• unregenerate
• unregenerated
• unregistered