Adjective

(er)

Of firm build; stiff; stout; strong.

a sturdy oak tree

* Sir H. Wotton

He was not of any delicate contexture; his limbs rather sturdy than dainty.

Solid in structure or person.

It was a sturdy building, able to withstand strong winds and cold weather.

The dog was sturdy and could work all day without getting tired.

(obsolete) Foolishly obstinate or resolute; stubborn.

* Hudibras

This must be done, and I would fain see / Mortal so sturdy as to gainsay.

* Atterbury

A sturdy , hardened sinner shall advance to the utmost pitch of impiety with less reluctance than he took the first steps.

Resolute, in a good sense; or firm, unyielding quality.

a man of sturdy piety or patriotism

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.

:

*

*: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.

:

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

:

*(John Milton) (1608-1674)

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

Not well founded; not firm or trustworthy; erroneous.

:

*(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.