To reduce to nothing, to destroy, to eradicate.
To render null and void; to abrogate.
To react with antimatter, producing gamma radiation and (for higher-mass reactants, especially composite particles such as protons) lighter particles (such as pions, muons, and neutrinos).
To gather one's thoughts and come to conclusions.
To assemble, construct, build, or formulate.
Stable and sound psychologically and hence in other respects; competent and responsible.
In total.