1 syllable:
bragh, brzeg, bug, bugg, bugge, cb sig, chug, doug, drug, druig, dug, gss tsig, hug, hugg, jug, klug, krug, lbc ig, lug, mug, plugg, plugh, pug, rug, rugg, schug, shrug, slesvig, slug, smug, snug, sprug, sugg, the agg, throg, thug, tug, ugh, zug

2 syllables:
abzug, almug, apcug, aslug, aufzug, auszug, bear-hug, bearhug, bear hug, bedrug, bed bug, beer mug, betrug, bettzeug, bigbug, billbug, boat bug, buttplug, darug, debug, drainplug, earplug, eilzug, fagbug, fahrzeug, fireplug, flugzeug, gelug, glowplug, goldbug, greenbug, hard drug, homeplug, humbug, junebug, june bug, kuchlug, lace bug, leaf bug, lovebug, macsbug, may bug, meshugge, misbug, mudbug, mudug, nondrug, okrug, omfug, pill bug, plant bug, prayer rug, pro-drug, prodrug, rawlplug, redbug, rose bug, schlagzeug, schnellzug, sea slug, shag rug, smugmug, soft drug, sowbug, sow bug, sparkplug, spielzeug, squash bug, street drug, tanjug, tausug, throw rug, true bug, umzug, unplug, werkzeug, wheel bug, young thug

3 syllables:
anti-drug, antidrug, aslaug, bunny hug, cancer drug, carpet bug, chug-a-lug, chugalug, coffee mug, crotonbug, doodle-bug, doodlebug, europlug, feuerzeug, firebug, galmudug, instabug, jitterbug, kissing bug, kremenchug, ladybug, lightning bug, litterbug, mandelbug, mealybug, mealy bug, multidrug, nobiskrug, polydrug, roseslug, scatter rug, schroedinbug, semi-slug, sheevaplug, shutterbug, spittlebug, sulfa drug, superbug, superdrug, thunder mug, toby jug, tumblebug, ukuug, waterbug, water bug, water jug, weatherbug, whiskey jug, wonder drug, zwischenzug

4 syllables:
arenabg, assassin bug, astringent drug, badeanzug, designer drug, erasmusbrug, ethical drug, neubaufahrzeug, potato bug, prescription drug, riesenflugzeug, sedative drug, tarnished plant bug

5 syllables:
diuretic drug, fertility drug, giant water bug, medicinal drug, psychedelic drug, sweep under the rug, tcl-debug

6 syllables:
antibiotic drug, antidepressant drug

7 syllables:
antibacterial drug, hallucinogenic drug