No definitions found for 'not infrequently'
Perhaps one of these:
nathan birnbaum,
nudum pactum,
neotoma floridana,
ne dona pas,
newtown, pa,
nathan bailey,
new edinburg,
ndmp,
nation of islam,
neotoma fuscipes,
newton falls, oh,
newtonville,
newton falls,
newton upper fal,
ntmbs