giggle, laugh, smirk, sneer, snicker, titter
English Collins Dictionary - English synonyms & Thesaurus
snigger ( sniggers plural & 3rd person present) ( sniggering present participle) ( sniggered past tense & past participle ) If someone sniggers, they laugh quietly in a disrespectful way, for example at something rude or unkind. verb
Suddenly, three schoolkids sitting near me started sniggering... V
Snigger is also a noun., n-count
...trying to suppress a snigger.
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