1) From time to time 2) Hardly ever 3) Hardly, if ever 4) Just shy of never 5) Nearly never 6) Not a lot 7) Not often 8) Not very often 9) Now and then 10) Occasionally 11) On the odd occasion 12) Once in a blue moon 13) Once in a while 14) Only once in a while 15) Seldom 16) Uncommonly 17) Very seldom 1) Infrequently 2) Not often 3) Once in a blue moon 4) Seldem 5) Seldom 6) Uncommonly 7) Unusually 
• (adv.) Finely; excellently; with rare skill. See 3d Rare, 2. • (adv.) In a rare manner or degree; seldom; not often; as, things rarely seen.
Rare'ly (râr'lȳ) adverb 1. In a rare manner or degree; seldom; not often; as, things rarely seen. 2. Finely; excellently; with rare skill. See 3d Rare , 2. « The person who played so rarely on the flageolet.» Sir W. Scott. « T...
[adv] - not often
seldom adverb not often; `we rarely met`