KEY: Summon.
SYN: Call, cite, challenge, convene, convoke, invite, bid.
ANT: Discharge, remit, relegate, send, disband, prorogue, dissolve, discard, dismiss.
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KEY: Sumptuous.
SYN: Costly, gorgeous, superb, splendid, expensive, magnificent, prodigal, princely, lavish, munificent.
ANT: Poor, mean, inexpensive, sordid, niggardly, economical, illiberal, beggarly, frugal, parsimonious, saving.
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KEY: Superable.
SYN: Feasible, possible, manageable, surmountable.