fiat. 1  an authoritative decree, sanction, or order: a royal fiat. Synonyms: authorization, directive, ruling, mandate, diktat, ukase. 2  a fixed form of words containing the word fiat, by which a person in authority gives sanction, or authorization.
Definitions for heartiness. Here are all the possible meanings and translations of the word heartiness. Princeton's WordNet(0.00 / 0 votes)Rate this definition: vigor, vigour, dynamism, heartiness(noun) active strength of body or mind. heartiness, wholeheartedness(noun) the quality of hearty sincerity.
Tightness (Definition) Tightness can mean different states at distinctive times. The most common is the complaint of tightness of chest, a feeling of discomfort, real or perceived, seen often in patients with asthma or panic disorder, or heart attack. Your physician will decide the cause. ...Read more.