Invalid and Ungrounded

Invalid adjective - Chronically or repeatedly suffering from poor health.

Ungrounded and invalid are semantically related In some cases you can use "Ungrounded" instead an adjective "Invalid".

Nearby Words: invalidate, invalidated, invalidity, invalided, invalidation

Invalid and ungrounded are semantically related in false topic. Sometimes you can use "Invalid" instead an adjective "Ungrounded", if it concerns topics such as fallacious.