also nonny-nonny, 1530s, an unmeaning refrain word in older English ballads, similar to the fa la of madrigals, often used "as a cover for indelicate allusions" [Century Dictionary].
non-invasive
non-judgmental
non-linear
non-member
non-metal
nonny
no-no
no-nonsense
nonpareil
non-partisan
non-payment
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