Lacking in depth, substance, or believability; underdeveloped; one-dimensional.
Having a head at a very obtuse angle to the shaft.
Unable to emit power; dead.
Smooth; having no protrusions, indentations or other surface irregularities, or relatively so.
Lacking acidity without being sweet.
Not having an inflectional ending or sign, such as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix; or an infinitive without the sign "to".
Absolute; downright; peremptory.
Without variation in tone or hue (uniform), and dull (not glossy).
Without variation in level, quantity, value, tone etc.
Of fees, fares etc., fixed; unvarying.
Lowered by one semitone.
Without spin; spinless.
Having small or invisible breasts and/or buttocks.
At a consistently depressed level; consistently lacklustre.
Flattening at the ends.
With all or most of its carbon dioxide having come out of solution so that the drink no longer fizzes or contains any bubbles.
Exact.
In a horizontal line or plane; not sloping.
Lacking liveliness or action; depressed; uninteresting; dull and boring.
Of a note or voice, lower in pitch than it should be.
Without variations in pitch.
Deflated, especially because of a puncture.
Having no variations in height.
Used to emphasize the smallness of the measurement.
Completely.
Without allowance for accrued interest.
Bluntly.
In the mile race, Smith's time was 3:58.56, and Brown's was four minutes flat.
Directly; flatly.
Exactly, precisely.
So as to be flat.
To make a flat call; to call without raising.
To fall from the pitch.
To become flat or flattened; to sink or fall to an even surface.
To depress in tone, as a musical note; especially, to lower in pitch by half a tone.
To dash or throw
To dash, rush
A flat tyre/flat tire.
A rectangular wooden structure covered with masonite, lauan, or muslin, often produced in standard modules, that is used to build wall surfaces on stage. Flats can be painted and outfitted with doors and/or windows to depict a building or other part of a scene. It's a hard-surfaced alternative to a backcloth orbackdrop.
An area of level ground (sometimes covered with water).
A flat-bottomed boat, without keel, and of small draught.
An early kind of toy soldier having a flat design.
The palm of the hand, with the adjacent part of the fingers.
A large mail piece measuring at least 8 1/2 by 11 inches, such as catalogs, magazines, and unfolded paper enclosed in large envelopes.
A flat (i.e. plane) mirror
The flat side of a blade, as opposed to the sharp edge.
A subset of n-dimensional space that is congruent to a Euclidean space of lower dimension.
A flat, glossy children's book with few pages.
A platform on a wheel, upon which emblematic designs etc. are carried in processions.
A railroad car without a roof, and whose body is a platform without sides; a platform car or flatcar.
An apartment, usually on one level and usually consisting of more than one room.
Level ground in general.
A note played a semitone lower than a natural, denoted by the symbol ♭ placed after the letter representing the note (e.g., B♭) or in front of the note symbol (e.g. ♭♪).
A type of ladies' shoe with a very low heel.
Level horse-racing ground, as contrasted with courses incorporating jumps, or the racing done on such ground.
A wide, shallow container or pallet.
A straw hat, broad-brimmed and low-crowned.
A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal.
A cheater's die with the edges shaved to make certain rolls more likely.
Any of various hesperiid butterflies that spread their wings open when they land.
A thin, broad brush used in oil and watercolour painting.
A flat sheet for use on a bed.
the area in the centre of a racecourse.
A type of flat-soled running shoe without spikes.
Advanced in complexity (and hence potentially abstract and/or difficult to comprehend).
Very elevated; extending or being far above a base; tall; lofty.
Having a large or comparatively larger concentration of (a substance, which is often but not always linked by "in" when predicative).
Most exalted; foremost.
Very traditionalist and conservative, especially in favoring older ways of doing things; see e.g. high church, High Tory.
Acute or shrill in pitch, due to being of greater frequency, i.e. produced by more rapid vibrations (wave oscillations).
Remote (to the north or south) from the equator; situated at (or constituting) a latitude which is expressed by a large number.
Having the highest rank in a straight, flush or straight flush.
Intoxicated; under the influence of a mood-altering drug, formerly usually alcohol, but now (from the mid-20th century) usually not alcohol but rather marijuana, cocaine, heroin, etc.
Near, in its direction of travel, to the (direction of the) wind.
Positioned up the field, towards the opposing team's goal.
Large, great (in amount or quantity, value, force, energy, etc).
Luxurious; rich.
Having a specified elevation or height; tall.
Of great importance and consequence: grave (if negative) or solemn (if positive).
Relatively elevated; rising or raised above the average or normal level from which elevation is measured.
Pertaining to (or, especially of a language: spoken in) in an area which is at a greater elevation, for example more mountainous, than other regions.
Above the batter's shoulders.
Keen, enthused.
Consummate; advanced (e.g. in development) to the utmost extent or culmination, or possessing a quality in its supreme degree, at its zenith.
Elevated in mood; marked by great merriment, excitement, etc.
Elevated in status, esteem, or prestige, or in importance or development; exalted in rank, station, or character.
Lofty, often to the point of arrogant, haughty, boastful, proud.
Strong-scented; slightly tainted/spoiled; beginning to decompose.
Winning; able to take a trick, win a round, etc.
Made with some part of the tongue positioned high in the mouth, relatively close to the palate.
With tall waves.
In or at a great value.
At a pitch of great frequency.
In or to an elevated position.
The maximum atmospheric temperature recorded at a particular location, especially during one 24-hour period.
A drug that gives such a high.
A large area of elevated atmospheric pressure; an anticyclone.
A high point or position, literally (as, an elevated place; a superior region; a height; the sky; heaven).or figuratively (as, a point of success or achievement; a time when things are at their best, greatest, most numerous, maximum, etc).
The highest card dealt or drawn.
A period of euphoria, from excitement or from an intake of drugs.