word of the day underpin un·der·pin /ˌəndərˈpin/ Learn to pronounce verb verb: underpin ; 3rd person present: underpins ; past tense: underpinned ; past participle: underpinned ; gerund or present participle: underpinning support (a building or other structure) from below by laying a solid foundation below ground level or by substituting stronger for weaker materials. support, justify, or form the basis for. "the theme of honor underpinning the two books" Courtesy of Google dictionary In construction or renovation, underpinning is the process of strengthening the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons: The original foundation isn't strong or stable enough. The usage of the structure has changed. Courtesy of Google Wikipedia Synonyms of underpin bear, bolster, ...
