The disciplinary policy at Commerce allows only one punishment for "violation of 'no-strike' affidavit": removal. A written statement that someone makes after promising officially to tell the truth.An affidavit can be used as proof in a law court. Resources and information to help you navigate your court case, including step-by-step guides for following procedures and help with understanding your options. Affidavit definition: A written declaration made under oath before a notary public or other authorized officer. From the Latin meaning "for this turn.". The term "to the best of my knowledge and belief" is used in affidavits and court documents to indicate that statements being made are not knowingly false.