Verb

(investigat)

To inquire into or study in order to ascertain facts or information.

to investigate the causes of natural phenomena

To examine, look into, or scrutinize in order to discover something hidden or secret.

to investigate an unsolved murder

To conduct an inquiry or examination.

* 1903 , , "The Shadow and the Flash,"

"Why don't you investigate'?" he demanded. And ' investigate I did.

Verb

(ensur)

To make a pledge to (someone); to promise, guarantee (someone of something); to assure.

*:

*:Thenne he cryed hym mercy and sayd Faire knyght for goddes loue slee me not / and I shall ensure the neuer werre ageynst thy lady / but be alwey toward her / Thenne Bors lete hym be

To make sure or certain of something (usually some future event or condition).

:

*{{quote-magazine, date=2013-08-10, volume=408, issue=8848, magazine=(The Economist), author=Lexington

, title= Keeping the mighty honest , passage=British journalists shun complete respectability, feeling a duty to be ready to savage the mighty, or rummage through their bins. Elsewhere in Europe, government contracts and subsidies ensure that press barons will only defy the mighty so far.}}