Home › Words › U › underconstrainunderconstrainunderconstrain means to apply insufficient constraints (to).Among words judged in Lexicurio's Arena, underconstrain ranks #2,613 of 42,762 for Qualifying.EtymologyFrom under- + constrain.verbTo apply insufficient constraints (to).e.g.“Finding the correct combination of assumptions that neither over- or underconstrain the inputs is often a difficult task.” — 2005, Janick Bergeron, Eduard Cerny, Alan Hunter, Verification Methodology Manual for SystemVerilog, page 284:Definitions & examples from Wiktionary (CC BY-SA 3.0).