acceptable from a particular viewpoint (as of competence or morality) : proper. Il y a 2 jours · Fitting definition: A fitting is one of the smaller parts on the outside of a piece of equipment or furniture | Meaning, pronunciation, translations and examples. Synonyms for FITTING: suitable, appropriate, fitted, fit, proper, good, happy, meet; Antonyms of FITTING: improper, wrong, inappropriate, incongruous, unfitting.