the adjective "tony," from which "tonier" is derived, is an american english colloquialism from the late 19th century. it originates from the word "tone," which entered english via old french and latin from the greek "tonos," meaning tension or musical pitch. by the early 19th century, "tone" had developed the figurative sense of the prevailing style, character, or social standard of a place. "tony" thus came to describe something or someone possessing the stylish character associated with high society. the comparative form "tonier" follows the standard english pattern of adding the native germanic suffix "-er," creating a word that literally means "having more of the qualities of high social tone."

Structure: ton(e) + i + er - tone (from latin tonus, from greek tonos meaning "stretching, tension, pitch, tone") - in this context, it refers to a prevailing style or character. - i (a connecting vowel, often used in word formation) - er (a suffix of old english origin used to form the comparative degree of adjectives)