explicit  adjective
 clear and exact
 Sheila shouldn't get lost because I gave her very explicit (=clearly expressed) directions
 how to get here.
 She was very explicit about (=said very clearly and exactly) what she thought was
 wrong with the plans.
 Some people think that magazines with sexually explicit pictures (=pictures showing
 clear and full details of sexual activity) should not be on public display.

 explicitly  adverb
 I told you quite explicitly (=clearly) to be home by midnight.

 explicitness  noun [U]
 Thanks to the explicitness (=clearness) of your instructions, we found our way easily.
 The film has been banned because of its sexual explicitness (=the details of sexual
 activity that it contains).