SYN: Bruise, knock, blow.
ANT: Soothing, smoothing, stroking, caress, pat.
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KEY: Convene.
SYN: Assemble, collect, gather, meet, congregate, call together, summon, muster, levy, convoke.
ANT: Disperse, dismiss, disband.
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KEY: Convenient.
SYN: Handy, apt, adapted, fitted, suitable, helpful, commodious, useful, timely, seasonable, opportune.
ANT: Inconvenient, awkward, obstructive, useless, superfluous, unseasonable, untimely, inopportune.