noun a word (other than a pronoun) used to identify any of a class of people, places, or things
adverb a word or phrase that modifies or qualifies an adjective, verb, or other adverb
preposition a word governing, and usually preceding, a noun or pronoun and expressing a relation to another word or element in the clause
conjunction a word used to connect clauses or sentences or to coordinate words in the same clause
Soldiers are trained to follow orders on/under no condition.
Under no condition should a child be left unsupervised near water.
On/under no condition should the defendant be allowed to leave the country before trial.
Under no condition should a patient be denied emergency medical treatment.
On no condition should a customer be treated disrespectfully.
On no condition will we agree to those terms.
On/under no condition should the safety protocols be ignored in the laboratory.
In a professional setting, a writer may use 'on/under no condition' to emphasize that something is absolutely not allowed or possible. For example, a writer may write 'Under no condition should the confidential information be shared with anyone outside of the company.'
A psychologist may use 'on/under no condition' to set clear boundaries with their clients. For instance, a psychologist may say 'On no condition should you engage in harmful behaviors towards yourself or others.'
A lawyer may use 'on/under no condition' to make a strong statement in a legal document or during a court proceeding. For instance, a lawyer may argue 'Under no condition can the evidence obtained illegally be admissible in court.'
A doctor may use 'on/under no condition' to emphasize the importance of following medical advice. For example, a doctor may say 'Under no condition should you stop taking your prescribed medication without consulting me first.'
An engineer may use 'on/under no condition' to stress the importance of safety protocols. For instance, an engineer may state 'On no condition should the equipment be operated without proper training and safety gear.'