Three quasi-words are: Thingamabob, whatchamacallit or whatdyadcallit.
restless
These are some compound words with ache in them: headache, earache, backache, stomachache, toothache,
Some compound words with lamp, script, and mark including watermark, lamplighter, and postscript. There are many words in the English language that are compound words that include words like lamp, script, and mark.
fortnightgoodnightmidnightnightcapnightclothesnightclubnightgownnighthawknightfallnightlifenightlightnightmarenightshadenightshirtnightsticknighttimeovernightweeknight
Darkness
Some four syllable compound words are:SuperstructureBabysitterSupermarketSuperpowerUnderbellySupersonicHoneysuckleSuperwomanUnderachieveSuperheroWatermelonUndercoverWhatsoever
Here are some compound words using the word news:NewspaperNewsboyNewsprint
Some compound words using "lace" are shoelace, cheeselace, and interlace.
Compound words using walk:boardwalkcakewalkcatwalkcrosswalkjaywalksidewalkwalkaboutwalkoutwalkoverwalkway
Some compound words containing bar are:barbellbarflysandbarbarmaidbartenderhandlebars
Compound words with every:EverybodyEverydayEverymanEveryoneEveryplaceEverythingEvery-timeEverywhere
Some compound words with more than four letters:afterthoughtbeachcombercheapskatedressmakerearthquakefeatherweightgrandmotherhearthstoneinpatientjawbreakerkindheartedlighthousematchmakerneedlepointofficeholderplainclothesquartermasterrattlesnakesuperstructuretablespoonundercurrentvolleyballwatermelon
awesomebothersomecumbersomefearsomefoursomegruesomehandsomelonesomesomebodysomedaysomehowsomeonesomeplacesomethingsometimesometimessomewhatsomewherethreesometiresometroublesometwosomewearisomewholesomewinsomeworrisome
restless
babysitterbabysitbabysatbabyhoodcrybabybabysitscrybabiesbabybird
waterfallfallbackfallawayfalloutdewfallfootfalllandfallnightfallpitfallpratfallrainfallrockfallshortfallsnowfallwindfall
blowhardhardballhardcorehardhathardlinerhardtackhardtophardwarehardwood