Adjective

(en adjective)

Well grounded or justifiable, pertinent.

*{{quote-magazine, year=2012, month=March-April

, author=(Jan Sapp) , title=Race Finished , volume=100, issue=2, page=164 , magazine=(American Scientist) citation , passage=Few concepts are as emotionally charged as that of race. The word conjures up a mixture of associations—culture, ethnicity, genetics, subjugation, exclusion and persecution. But is the tragic history of efforts to define groups of people by race really a matter of the misuse of science, the abuse of a valid biological concept?}}

I will believe him as soon as he offers a valid answer.

Acceptable, proper or correct.

A valid format for the date is MM/DD/YY.

Do not drive without a valid license.

Related to the current topic, or presented within context, relevant.

(logic) Of a formula or system: such that it evaluates to true regardless of the input values.

(logic) Of an argument: whose conclusion is always true whenever its premises are true.

An argument is valid if and only if the set consisting of both (1) all of its premises and (2) the contradictory of its conclusion is inconsistent.

Adjective

(er)

Firm in standing or position; not tottering or shaking; fixed; firm.

:

*Sir (Philip Sidney) (1554-1586)

*:Their feet steady , their hands diligent, their eyes watchful, and their hearts resolute.

*

*:But then I had the flintlock by me for protection. ¶ There were giants in the days when that gun was made; for surely no modern mortal could have held that mass of metal steady to his shoulder. The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window,.

*

*:Captain Edward Carlisle, soldier as he was, martinet as he was, felt a curious sensation of helplessness seize upon him as he met her steady gaze, her alluring smile?; he could not tell what this prisoner might do.

Constant in feeling, purpose, or pursuit; not fickle, changeable, or wavering; not easily moved or persuaded to alter a purpose; resolute.

:

Smooth and not bumpy or with obstructions.

:

Regular and even.

:

Slow.