1. That cannot be comprehended or understood; inconceivable.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• incomprihensibly,
• incomprehensiably,
• incomprenhensible,
• incomprehensiable,
• incomprhensible,
• uncomprehensable,
• incomrehensible,
• incomprensible,
• incomprehesible,
• uncomprehendible,
• incomprihensible,
• incomprehensable,
• incomprehendable,
• incomprehendible,
• incomprehnsible,
• incomprehinsable,
• indomprehensible,
• incomprehensivle,
• inomprehensible,
• incoprehensible

• incomprehensibility,
• incommensurable,
• incompressible,
• incomprehensive,
• incomprehension,
• incommensurate,
• incompressibility.

The adjective form of "incomprehensible" is "incomprehensible".

The plural form of the word "incomprehensible" is "incomprehensibles".

The singular form of the word "incomprehensible" is "incomprehensible". The word does not change in its form for singular or plural usage.