neological (nee-uh-loj-i-kuh l), adj. 1. following a newly coined principle of logic. 2. Psychology. following a new line of reasoning that is coined especially by a person affected with schizophrenia and is typically a combination of two logical principles or a shortening or distortion of an existing logical principle. 3. Parenting. following a new line of reasoning that is coined in any discussion with a teenager. 4. Politics. Anything that comes from the Trump White House.