疑義 is read as ぎぎ (gigi) and means doubt.
ぎぎ
gigi
かいぎしゅぎ
skepticism
かいぎしゅぎしゃ
skeptic
ぎわく
doubt
ぎごく
bribery scandal
ぎしんあんき
suspicion will raise bogies
ぎもんひょう
disputed ballot
ぎもんし
doubting
ぎじ
ぎごくじけん
しゅぎ
doctrine
せいぎ
correct meaning
いぎ
meaning