snigger

[snig-er] /ˈsnɪg ər/
verb (used without object), verb (used with object), noun
1.
Related forms
sniggerer, noun
sniggeringly, adverb
British Dictionary definitions for snigger

snigger

/ˈsnɪɡə/
noun
1.
a sly or disrespectful laugh, esp one partly stifled
verb (intransitive)
2.
to utter such a laugh
Word Origin
C18: variant of snicker
Word Origin and History for snigger
v.

1706, variant form of snicker (v.). Related: Sniggered; sniggering. As a noun from 1823.