Assault. Attack, invasion, charge, onset, onslaught, aggression.
Ant. Resistance, defense, repulsion, retaliation, undermining.
Assemble. Gather, collect, convene, congregate, meet, come together.
Ant. Disperse, scatter, dismiss.
Assembly. Concourse, company, gathering, congregation, assemblage, meeting, convocation, throng; congress, parliament, legislature, synod, diet, council, convention; ball, dance, dancing party.
Ant. Dispersion, dismissal, disunion, disruption.
Assent, n. Acquiescence, acknowledgment, approval, concurrence, approbation, accord, consent, agreement, compliance.
Ant. Disagreement, dissent, difference, protest, declension.
Assertion. Asseveration, protestation, allegation; position, statement, word, declaration; vindication, defense, maintenance.
Ant. Denial, contradiction, abandonment, protest, disavowal, retraction, repudiation, confutation, abjuration.