Concocted rhymes with:
acted, addicted, affected, afflicted, attracted, collected, conducted, connected, constricted, constructed, contracted, contradicted, convicted, corrected, depicted, detected, directed, dissected, distracted, effected, elected, enacted, erected, expected, extracted, inducted, infected, inflected, injected, instructed, interacted, neglected, nonrestricted, objected, overprotected, perfected, projected, protected, reacted, reelected, reflected, restricted, retracted, selected, suspected
Concocted sounds like:
canasta, canoeist, canonized, canwest, changed, chemist, chengdu, cinched, cincotta, coincide, coincided, comcast, commenced, communicate, communicated, communist, comsat, concede, conceded, conceit, conceited, conchita, conchoid, concoct, congest, congested, conjugate, conjugated, connaught, connect, connected, conquest, consist, consisted, constitute, constituted