Adjective

(en adjective)

Pleasing, either to the mind or senses; pleasant; grateful.

agreeable manners

agreeable remarks

an agreeable person

fruit agreeable to the taste

* (rfdate) (Oliver Goldsmith):

A train of agreeable reveries.

(colloquial) Willing; ready to agree or consent.

* (rfdate) (Hugh Latimer):

These Frenchmen give unto the said captain of Calais a great sum of money, so that he will be but content and agreeable that they may enter into the said town.

Agreeing or suitable; conformable; correspondent; concordant; adapted; .

* (rfdate) (w, Roger L'Estrange):

That which is agreeable to the nature of one thing, is many times contrary to the nature of another.

In pursuance, conformity, or accordance; (used adverbially)

Agreeable to the order of the day, the House took up the report.

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.