"laugh in a half-suppressed way," 1690s, possibly of imitative origin, similar to Dutch snikken "to gasp, sob." Related: Snickered; snickering.
snicker (n.)
"a smothered laugh," 1835, from snicker (v.).
sneer
sneeze
sneezy
snell
snick
snicker
snickersnee
snide
sniff
sniffer
sniffle
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