flat
flat
adjective
(Of a drink) having lost its bubbles and become tasteless.
"This lemonade has gone flat."
adjective
Having a smooth, level surface without bumps or curves.
"The road was completely flat."
adjective
(Of a battery) completely discharged and without power.
"My phone battery is flat."
noun
A set of rooms on one floor, used as a private residence.
"They bought a new flat."
Thesaurus
Synonyms: horizontal, inactive, 2-dimensional, multidimensional, two-dimensional, straight, directly, planar, noneffervescent, flatcar, flatbed, flat tire
Antonyms: contrasty, indirectly, natural, sharp