1) Exclusively Saxon word 2) Exclusively Anglo word 3) Hardly 4) Hardly ever 5) Hardly every day 6) Infrequent 7) Infrequently 8) Inhabitually 9) Maybe once or twice 10) Models work, but not often 11) Not as a rule 12) Not much 13) Not often 14) Not very often 15) On rare occasions 16) Once in a blue moon 1) Infrequently 2) Little 3) Not often 4) Once in a blue moon 5) Rarely 
• (a.) Rare; infrequent.
Sel'dom (-dŭm) adverb [ Usually, Compar . More seldom (mōr'); superl . Most seldom (mōst'); but sometimes also, Seldomer (-ẽr), Seldomest .] [ Anglo-Saxon seldan , seldon , seld...Sel'dom adjective Rare; infrequent. [ Archaic.] 'A suppressed and seldom anger.' Jer. Taylor.