Laconic rhymes with:
conic, connick, allophonic, audiotronic, avionic, blahnik, bubonic, catatonic, chronic, conic, connick, demonic, diasonic, diatonic, electronic, embryonic, fibronic, flextronic, ganglionic, gnomonic, harmonic, hedonic, hegemonic, histrionic, hyaluronic, hydroponic, hypersonic, hypertonic, ionic, ironic, isoelectronic, isotonic, kronick, lasersonic, leptonic, masonic, medtronic, microelectronic, miltonic, mnemonic, monophonic, napoleonic, neoplatonic, nucleonic, ovonic, panasonic, personic, pharaonic, philharmonic, phonic, photronic, planktonic, plantronic, platonic, plutonic, pneumonic, polyphonic, propionic, respironic, sardonic, sonic, supersonic, symphonic, synchronic, tectonic, telectronic, telephonic, tonic, tranzonic, tronic, ultrasonic, vanik, varitronic
Laconic sounds like:
lachance, lacking, lagging, lagoons, lagunas, lajeunesse, lakins, lakshamanan's, lashing, lashings, laughing, laughinghouse, lawlessness, lawson's, laziness, leaching, leachman's, leaking, leasing, leasing's, leeson's, legging, leggings, legions, legumes, leising, lesinski, lesions, lesniak, lesnick, lesniewski, lessening, lessens, lessing, lessness, lessons, leszczynski, lexicons, leysen's, li-kang, liaisons, licence, licences, license, licensee, licensees, licenses, lichens, licking, liggins, likeness, likenesses, likening, likens, liking, likins, locking, lockneys, logging, loggins, logjams, looking, loosening, loosens, loosing, losing, losinski, lossing, louganis, louganos, louisiana's, louisianians, lousiness, lozano's, lozenge, lozenges, lozinski, lucking, lugging, lukens, lukins, lusinchi, lycoming, lykens, lykins