be, feel | become | make sth | keep sth
It''s important to keep your documents secure.

extremely, very | absolutely, completely, entirely, perfectly, quite, totally, utterly | fairly, pretty, reasonably, relatively | enough, sufficiently
I finally felt secure enough in myself to have a child of my own.

apparently | economically, financially | socially

against
The house has been made secure against intruders.

firmly, properly, tightly

to
The crates had not been properly secured to the truck.

with
She secured the boat with a rope.

easily
Victory was not going to be easily secured.

automatically

be able to, manage to | fail to
They failed to secure the release of the prisoners.

help (to)

an attempt/effort to secure sth, be aimed at securing sth, a chance/hope of securing sth
trying to improve their chances of securing employment

succeed/be successful in securing sth