An addlehead is a foolish or dull-witted person.
addlehead. ahead. airhead. arrowhead. baldhead. bankhead. beachhead. behead. bighead. bitthead. blackhead. blockhead. bluehead. bonehead. bonnethead. bowhead. bridgehead. bufflehead. bulkhead. bullethead. bullhead. clubhead. crosshead. deadhead. dragonhead. drumhead. dunderhead. egghead. fathead. fiddlehead. figurehead. flathead. floodhead. forehead. fountainhead. godhead. hammerhead. hogshead. horsehead. hothead. knucklehead. letterhead. loggerhead. maidenhead. masthead. muttonhead. nailhead. overhead. pinhead. pithead. pothead. railhead. redhead. roundhead. saphead. shovelhead. showerhead. skinhead. sleepyhead. snakehead. spearhead. spreadhead. staghead. stairhead. stephead. subhead. swellhead. thickhead. trailhead. turtlehead. warhead. wellhead. whitehead.
abroad ad addlehead ahead airhead armload arrowhead axhead backspread bad barehead barrelhead beachhead bead bedspread bedstead beetlehead behead bestead blackhead boatload bonehead bowhead brakeload bread broad broadspread bromeliad bulkhead cad carload cartload conehead copperhead counterplead crawdad crossroad dad dead deadhead doodad doughhead dragonhead dread dryad duad dumbhead dunderhead dyad egad egghead fad fairstead farmstead fathead fiddlehead figurehead flathead footpad forehead forepad fountainhead gad gingerbread glad goad godhead gonad grad granddad grayhead hamadryad hammerhead hardhead head hoarhead hogshead homestead hoptoad horsehead Iliad inroad instead ironclad ironhead jihad knead kneepad lad lead leatherhead letterhead load loggerhead mad maidenhead mead mislead misread mushhead muttonhead myriad naiad nomad Olympiad outspread overhead overload overspread overtread owlhead oxgoad oxhead pad pighead pinhead pistonhead plead pothead proofread quad rad railhead railroad read redhead reload reread respread rethread retread road sad salad scad semidead seminomad sheepshead shewbread shipload shortbread sleepyhead snakehead spearhead springhead squad stead steamerload sweetbread tad tetrad thread thunderhead tightwad toad towhead trainload tread triad truckload turtlehead unclad undead undergrad underread unload unproofread unread virginhead wad wagonload waybread whitehead widespread wingspread woodenhead woolhead wronghead yellowhead