flatter (Verb) — Praise or compliment someone, esp. insincerely or to win favour. ex. "No matter how much the sisters tried to flatter their dad, he refused to buy any more tickets for rides"
flatter (Verb) — Make someone feel proud by praising them, or feeding their vanity.
flatter (Adjective) — Having a surface without slope, tilt in which no part is higher or lower than another. ex. "a flat desk" ex. "skirts sewn with fine flat seams"
flatter (Adjective) — Having a relatively broad surface in relation to depth or thickness. ex. "flat computer monitors"
flatter (Adjective) — Not modified or restricted by reservations. ex. "a flat refusal"
flatter (Adjective) — Stretched out and lying at full length along the ground. ex. "found himself lying flat on the floor"
flatter (Adjective) — (photography) lacking contrast or shading between tones.
flatter (Adjective) — (of a musical note) lowered in pitch by one chromatic semitone. ex. "B flat"
flatter (Adjective) — (biology) flattened laterally along the whole length (e.g., certain leafstalks or flatfishes).
flatter (Adjective) — Lacking taste, flavour or tang. ex. "a flat diet"
flatter (Adjective) — Lacking stimulating characteristics; uninteresting. ex. "a flat joke"
flatter (Adjective) — Having lost effervescence. ex. "flat beer" ex. "a flat cola"
flatter (Adjective) — Sounded or spoken in a tone unvarying in pitch. ex. "the owl's faint flat hooting"
flatter (Adjective) — Horizontally level. ex. "a flat roof"
flatter (Adjective) — Lacking the expected range or depth; not designed to give an illusion or depth. ex. "a flat two-dimensional painting"
flatter (Adjective) — Not reflecting light; not glossy. ex. "flat wall paint"
flatter (Adjective) — Commercially inactive. ex. "flat sales for the month" ex. "prices remained flat" ex. "a flat market"
flatter (Adjective) — Drained of electric charge; discharged.