'twas /twoz, twəz/ (archaic or dialect) a contraction of it was

• underemployed
• underemployment
• under-espial
• under-espials
• underestimate
• underestimated
• underestimates
• underestimating
• underestimation
• underexpose
• underexposed
• underexposes
• underexposing
• underexposure
• underexposures
• underfed
• underfeed
• underfeeding
• underfeeds
• underfelt
• underfelts
• underfinished
• under fire
• underfire
• underfired