To declare with assurance or plainly and strongly; to state positively. / To use or exercise and thereby prove the existence of.

(computer science) an assertion; a section of source code which tests whether an expected condition is true.

A violent onset or attack with physical means, for example blows, weapons, etc. / A violent verbal attack, for example with insults, criticism, and the like

(transitive) To attack, physically or figuratively; to assail. / (transitive) To threaten or harass.

The act of asserting; positive declaration or averment. / Something which is asserted; a declaration; a statement asserted. / A statement or declaration which lacks support or evidence.

(computer languages) A programming language in which the source code of programs is composed of mnemonic instructions, each of which corresponds directly to a machine instruction for a particular processor.

To murder someone, especially an important person, by a sudden or obscure attack, especially for ideological or political reasons.

(obsolete) Assassination, murder. / (obsolete) An assassin.

A set of pieces that work together in unison as a mechanism or device. / The act of putting together a set of pieces, fragments, or elements. / A congregation of people in one place for a purpose.

(transitive) To attack with harsh words or violent force (also figuratively).