The word "laudatory" comes from the Latin word "laudatorius," which means "praiseworthy" or "of or pertaining to praise." It derives from the verb "laudare," meaning "to praise." The root "laus" or "laud-" in Latin means "praise, glory." The suffix "-ory" in English is used to form adjectives and often indicates a relationship or pertaining to, thus forming "laudatory" to describe something that expresses or contains praise. The word entered the English language in the early 16th century, retaining this meaning of expressing approval or commendation.