Adjective

(en adjective)

Apparent, evident; meant for open display.

* 1956–1960 , (second edition, 1960), chapter ii: “Motives and Motivation”, page 32:

Motives, of course, may be mixed; but this only means that a man aims at a variety of goals by means of the same course of action. Similarly a man may have a strong motive or a weak one, an ulterior motive or an ostensible one.

* '>citation

In witch-trials the conflict was officially defined as between the accused and God, or between the accused and the Catholic (later Protestant) church, as God's earthly representative. [...]
Behind the ostensible conflict of the witch-trial lay the usual conflicts of social class, values, and human relationships.

Appearing as such; being such in appearance; professed, supposed (rather than demonstrably true or real).

The ostensible reason for his visit to New York was to see his mother, but the real reason was to get to the Yankees game the next day.

Adjective

(en adjective)

Obvious or easy to notice.

* {{quote-book, year=1928, author=Lawrence R. Bourne

, title=Well Tackled! , chapter=7 citation , passage=“No, don't,” replied the superintendent; “in fact, I'd rather you made yourself conspicuous elsewhere. Go down to the landing stage and cross to New Brighton or Wallasey—doesn't matter which—and come back. No doubt you will be seen, and reported to have gone across.”}}

He was conspicuous by his absence.

Noticeable or attracting attention, especially if unattractive.

* 1969 , Saul Bellow, Mr Sammler's Planet , Penguin Books Ltd, page 6:

For his height he had a small face. The combination made him conspicuous .

He had a conspicuous lump on his forehead.