having a level surface; without raised areas or indentations

he sat down on a flat rock

trim the surface of the cake to make it completely flat

lacking emotion; dull and lifeless

‘I'm sorry,’ he said, in a flat voice

(of a sparkling drink) having lost its effervescence

she sipped some of the flat champagne

(of a fee, wage, or price) the same in all cases, not varying with changed conditions or in particular cases

a flat fare of £2.50

(of musical sound) below true or normal pitch

relating to flat racing

the Flat season

lower (a note) by a semitone

when a person has a poor ear for music, he will flat and sharp right along without knowing it

make flat; flatten

flat the loaves down

lavish praise and compliments on (someone), often insincerely and with the aim of furthering one's own interests

she was flattering him in order to avoid doing what he wanted

live in or share a flat

Zoë flats in Auckland