Adv. faithlessly , dishonestly , treacherously , perfidiously .

http://lila-erc.eu/data/lexicalResources/LewisShort/id/LexicalSense/n34917.2_perfidiose an entity of type: LexicalSense

Adv. faithlessly , dishonestly , treacherously , perfidiously . 
Adv. faithlessly , dishonestly , treacherously , perfidiously . 

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