Don't be lazy, look at a dictionary, you might learn something about your language in the process.
7 letter words that start with M for something that has no floor, walls, windows, and no door could be:macaquemachetemacramemadnessmaestromagentamahjongmajestymalaisemalariamanateemankindmannersmarquisMartianmartinimascaramassagematadormeaslesmeerkatmeetingmenthalmentionmercurymermaidmessagemethanemicrobemidriffmidwifemigrantmileagemilitiamillionminimummiraclemistakemixturemobstermockerymodestymonarchmongrelmonoclemonsoonmonstermorningmournermufflermustangmustardmystery
7 letter words ending in p: * scallop * harelip * airdrop * trollop * bellhop * gumdrop
ammoniaamphorabolognacholeradiplomainertiaminutiasangriatempuraveranda
Zoology is animal biology.
Here are two: Filofax Anthrax
apology is one word that starts with a.
Here are some possible words: backbitbacklitbailoutbaldestballastbanquetbaptistbarefitbaronetbassistbayonetbearcatbedfastbedpostbeleaptbelfastbenefitbequestbetwixtbigfootbiggestbiscuitblanketblatantblowoutboldestbombastboneletbonesetboniestbookletboomletborschtbouquetbowknotbowshotboxiestboycottbracketbravestbrisketbroughtbumboatbummestbuoyantburnoutbushtitbusiest
7 letter S words ending with M:serfdomsymptomsynonymsarcasmsanctumsunbeam
abandon
Amassed
garages
unscrew
7-letter words ending with H:anguishbeneathbeseechblemishboorishbrutishcherisheyelashfurnishgarnishimpeachmannishmenorahnourishpiggishprudishreddishrematchscratchselfishstealthsunfishtarnishunearthunleashunlatchvarnishwarpath
Address!
abscondabridgeactressagelessagonizeaimlessairportanswersanglinganklingappriseappealsappliedapprovearmholearticlearrangeartworkaspiredassuredastoundassuageaverageavoidedawesomeawkward
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A muscle is a 7 letter word that starts with m and helps you run fast.