欠如けつじょ
ketsujo

Noun
Suru Verb

1. lack; absence; shortage; deficiency; privation

Intransitive
それは相互そうご理解りかい欠如けつじょがもとになっているとおもう。
sorewa sōgorikaino ketsujoga motoni natte iruto omō.
I think that is based on a lack of mutual understanding.