lying2
ˈlʌɪɪŋ/
adjective
not telling the truth.
"he's a lying, cheating, snake in the grass"
synonyms:untruthful, false, dishonest, mendacious, perfidious, deceitful, deceiving, deceptive, duplicitous, dissimulating, dissembling, double-dealing, two-faced, Janus-faced, guileful, underhand...