Breadcrumb Home > Thesaurus > U Synonyms of underframe Find synonyms for: Noun 1. skeleton, skeletal frame, frame, underframe, supporting structure usage: the internal supporting structure that gives an artifact its shape; "the building has a steel skeleton" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of underframe (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: panache Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language