Adjective

(er)

Untrue, not factual, factually incorrect.

*{{quote-book, year=1551, year_published=1888

, title= A New English Dictionary on Historical Principles: Founded Mainly on the Materials Collected by the Philological Society , section=Part 1, publisher=Clarendon Press, location=Oxford, editor= , volume=1, page=217 , passage=Also the rule of false position, with dyuers examples not onely vulgar, but some appertaynyng to the rule of Algeber.}}

Based on factually incorrect premises: false legislation

Spurious, artificial.

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*:At her invitation he outlined for her the succeeding chapters with terse military accuracy?; and what she liked best and best understood was avoidance of that false modesty which condescends, turning technicality into pabulum.

(lb) Of a state in Boolean logic that indicates a negative result.

Uttering falsehood; dishonest or deceitful.

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Not faithful or loyal, as to obligations, allegiance, vows, etc.; untrue; treacherous.

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*(John Milton) (1608-1674)

*:I to myself was false , ere thou to me.

Not well founded; not firm or trustworthy; erroneous.

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*(Edmund Spenser) (c.1552–1599)

*:whose false foundation waves have swept away

Not essential or permanent, as parts of a structure which are temporary or supplemental.

(lb) Out of tune.

Adjective

(en adjective)

Useless; unproductive.

The unskilled man's attempt at fixing his car engine was fruitless .

{{quote-Fanny Hill, part=2 , At length, after repeated fruitless trials, he lay down panting by me, kiss'd my falling tears, and asked me tenderly what was the meaning of so much complaining? }}

Bearing no fruit; barren.

The fruitless woman desperately wanted to have children.

(rare) Without fruit.

* 1923 , The Homestead (issues 386-410, page 33)

The first fruits of the season were eagerly sought after, and everybody was thankful that once more dread winter with its unvarying monotony of fruitless meals was a thing of the past.

* 1966 , Joseph Irving Goodman, Diet and live (page 14)

the many individual claims as to the ideal diet , for instance, the high-carbohydrate diet, the milkless diet, the breadless diet, the meatless diet, the fruit diet or the fruitless diet, the high-protein or the low-protein diet, and innumerable variations.