Usage:His car could not start as the battery was flat.
Usage:I will be able to complete this work in two days flat.
Usage:This symphony has prelude in E - minor.
Usage:This soda has become flat due to long storage.
Usage:Salt flats are located on flat areas near sea shores.
Usage:The singer sang all songs in a flat voice.
Usage:The restaurant serves rather flat food.
Usage:Due to floods, all huts near the river were razed flat to the ground.
Usage:He was speaking in a dull flat voice.
Usage:He could not be selected for the army as he had flat feet.
Usage:The contractor is charging a flat rate for supply of labour.