Succinct rhymes with:
blinked, distinct, extinct, indistinct, interlinked, linked, winked, adjunct, banked, bengt, blanked, blinked, cranked, debunked, defunct, distinct, dunked, extinct, flanked, flunked, franked, hoodwinked, indistinct, instinct, interlinked, junked, linked, outflanked, plunked, precinct, ranked, sacrosanct, spanked, spelunked, tanked, thanked, winked, yanked
Succinct sounds like:
sanctity, schenectady, schuknecht, secessionist, semi-height, sense-data, sensed, singed, sinusoid, skinniest, smacked, smashed, smestad, smoggiest, smoked, smoshed, snacked, snagged, sneaked, sneezed, sonesta, soonest, sumgait, summonsed, suncoast, sunkist, sunnyside, sunset, sunstate, sunsweet, swimsuit