1 syllable:
-grave, brave, cave, chave, clave, crave, dave, drave, fave, flav-, flave, flavo-, gave, glave, grave, knave, lave, llave, mave, mwave, nave, nueve, p-wave, pave, pv-wave, quave, rave, s-wave, save, schav, schave, sclave, shave, slave, stave, thave, they've, theyve, thrave, waive, weyve, z-wave

2 syllables:
agave, airwave, and they've, batcave, beetrave, begrave, behave, beknave, belgrave, beslave, bondslave, brainwave, burgrave, chillwave, close shave, concave, conclave, cosgrave, cotgrave, d.a.v, darkwave, deprave, dissave, dolewave, drawshave, earthquave, embrave, encave, enclave, engrave, enslave, enwave, esclave, exclave, fashwave, forgave, gungrave, handwave, hardgrave, hargrave, heatwave, impave, inclave, ingrave, inshave, jackslave, joywave, kunaev, lafave, landgrave, lefave, lightwave, longwave, m-wave, margrave, mcclave, mind-wave, misgave, new-wave, newwave, nextwave, olave, outbrave, outknave, pak'nsave, palgrave, palsgrave, portglave, portgrave, preshave, redgrave, reenslave, repave, rhinegrave, seagrave, shockwave, short-wave, shortwave, sine-wave, sinewave, skywave, soundwave, sounwave, spokeshave, starwave, sulgrave, synthwave, uitgave, unfav, ungrave, waldgrave, wargrave, white slave, wildgrave

3 syllables:
after-shave, aftershave, algorave, antenave, architrave, asianave, auto-save, autoclave, autosave, betterave, biconcave, burma-shave, crimewave, dentilave, disenslave, flutterwave, galley-slave, galley slave, intergrave, kazikaev, laticlave, microwave, misbehave, nikolaev, overlave, picowave, powerslave, reengrave, southern brave, spike-and-wave, steve redgrave, vaporwave

4 syllables:
angusticlave, atomiswave, audioslave, cradle-to-grave, dzhokhar tsarnaev, evaporaive, imam khataev, khamzat chimaev, photo-engrave, photoengrave, sovietwave

5 syllables:
continuous-wave, tamerlan bashaev

6 syllables:
shin megami tensei v

7 syllables:
abdulrashid sadulaev