偽言 is read as ぎげん (gigen) and means falsehood.
ぎげん
gigen
いつわりごと
lie
ぎぶつ
spurious article
ぎぞう
forgery
ぎそう
camouflage
にせ
pseudo-
いつわる
to deceive
ぎしょう
false evidence
ぎめい
false name
ぎぜん
hypocrisy
いつわり
にせちゅうごくご
pseudo-Chinese
ぎこぎって
counterfeit check (cheque)