logo-, log-, -logia, -logic, -logical, -logism, -logician, -logian, -logist, -logy +

The inability to speak due to a mental deficiency or an episode of dementia.

Illogical; unreasonable, inconsiderate.

A reference to those who must eat their own words.

The intelligent power displayed in organic activities.

An abnormal slowness or deliberation in speech.

Absurdly convoluted, sophistical, or illogical argumentation; glib and specious reasoning; a person who uses such logic.

1. Impairment of speech and reasoning as the result of a mental disorder.
2. Impairment of reasoning powers marked by an inability to express ideas in speech.

Morbid verbosity, excessive talking, or loquacity.

Lack of the ability to speak.

A medical word.

1. An abnormal or excessive flow of words.
2. Excessive and rapid speech, seen in certain mental disorders; as in manic episodes of bipolar disorder and some cases of schizophrenia.

The inability to recall a word or the right word.

1. Any speech defect due to damage of the central nervous system.
2. Partial or total loss of the ability to articulate ideas or comprehend a spoken or written language, resulting from damage to the brain caused by injury or disease.
3. A defect or loss of the ability to speak or write, the loss of the ability to understand spoken or written language, due to injury or disease of the brain centers.

1. The inability to express ideas in writing.
2. The loss of power to express thoughts by means of spoken words as a result of a disease or injury of certain brain centers.

1. Aphasia or a defect or loss of the power of expression by speech or writing of a sensory character.
2. The inability to recognize spoken or written words; forgetting words.