build·up /ˈbɪldˌʌp/ noun plural build·ups
an increase in something that occurs as time passes [count
] ▪ the country's military buildup [=an increase in the size of its military] ▪ There is a big traffic buildup on the highway.
— often + of ▪ He had a buildup of fluid in the lungs. ▪ a buildup of tension/pressure/stress
] ▪ You should clean the mechanism regularly to prevent buildup of dirt.
things that are said to cause people to feel excited about something (such as a future event) or someone (such as a performer) [noncount
] ▪ After all the buildup [=hype, publicity], I expected the movie to be better than it actually was.
] ▪ Both players were given big buildups before the game.
a series of things that lead to an important event or occurrence — + to ▪ There have been many news stories during the buildup to the peace talks. ▪ The story/movie/song has a great buildup to a terrific ending.