To insist on the legitimacy of one's rights, opinion, etc; not to allow oneself to be dismissed; to ensure that one is taken into consideration; to make oneself respected; to be assertive.
He would often assert that there was life on other planets.
To maintain or defend, as a cause or a claim, by words or measures; to vindicate a claim or title to
To use or exercise and thereby prove the existence of.
To set a signal on a line using a voltage or electric current.
To specify that a condition or expression is true at a certain point in the code.
To declare with assurance or plainly and strongly; to state positively.
an assertion; a section of source code which tests whether an expected condition is true.
To do or offer to do something voluntarily.
To offer, usually unprompted.
To grow without human sowing or intentional cultivation.
To enlist oneself as a volunteer.
To offer the services of (someone else) to do something.
A plant that grows spontaneously, without being cultivated on purpose; see volunteer plant in Wikipedia.
A voluntary member of the organized militia of a country, as distinguished from a regular or member of the standing army.
One who enters into military service voluntarily (but who, when in service, is subject to discipline and regulations like other soldiers), as opposed to a conscript.
A native or resident of the American state of Tennessee.
One who enters into, or offers themself for, any service of their own free will, especially when done without pay.
A person who acts out of their own will without a legal obligation, such as a donor.