underboost

== English == === Etymology === From under- +‎ boost. === Pronunciation === === Verb === underboost (third-person singular simple present underboosts, present participle underboosting, simple past and past participle underboosted) To create too little pressure in an engine's combustion chamber. === Noun === underboost (countable and uncountable, plural underboosts) (uncountable) The process of underboosting. (countable) An instance of underboost. === Anagrams === no-doubters