yes. mugger, slugger, logger, slogger, bogged,boggle, etc
appleapplyappreciateapproachappraiseappellateapplaudclappedcuppedclippedchippedcappeddappledippeddroppeddrippedflappperflippableflipperflippedfloppedgrippedgloppedguppygrapplehappyhippiehoppedpuppypeppypreppypepperpoppypoppedripplerapportsuppersupportsupplyslappedsnappedsnappystrippedshippedslippedsloppedsteppedtoppertippedtrappedwhopperwhipped
No words were found in the English dictionary. The name Exxon has a double x. Exxon is a brand of petroleum based products manufacturered by the ExxonMobil company.
No, the C and G is hard at the end of words. There's a rule applied that the C or G is only soft when it comes before an E, I, or Y. When the C or G comes before any other letters or it ends, then it'll be hard. Technically, when the word ends with a C or G, then these letters would also remain hard.
Not English words, that I know of. Powwow is one, also a variety of worms glowworm, arrowworm, screwworm and slowworm.
The word "foggy" contains a double consonant: the letter "g".
buggingbaggingbeggingcloggingdiggingfloggingflagginggagglegigglegigglinggogglesgroggygagginggogglinghuggingjoggingluggingleggingsmuggingnaggingriggingstaggeringshaggingsluggingsnaggingswaggeringtaggingwagging
aggressiveaggravateaggrievebaggybeggingbiggerbiggiebraggartboggedboggledbuggedcloggeddraggedeggflaggedgigglegagglegoggleshagglejuggleluggedleggymoxiemuggymuggednaggedpeggedraggedsluggedtoggletaggedtriggerwaggednogginflogged
Words with double t's:atticattachattainattireattitudebatterybettingbrittlebarrettebuttressbetterbitterbottlebutterbuttonblottercattlecassettecommitteecluttercottoncuttingdittodiskettedinetteetiquetteflutterfritterfatterfetteredfittedglittergutterhitterhotterjitterykettleknittedknottedlittlelotterylettermattermattednettedotterpatternpattypattedpottingpotteryputterpettedrattlesettlestutterspattersputterspittingsplittingspottedswattedslottedscattertattleutterlyvettedwittedkittenlitterbatteredpatternsbetterbottompermitted
no, g sharp is the only "landlocked" note, which means it can only be called g sharp or a flat, not any double sharps or double flats.
Egg
aardvark
Good Goof Goon Goop
No
ammoniaammunitionbrimmingbummerchummeddimmerdrummerflammablegrimmergrommetglimmergrammarhammerhummerimmerseimmurejammedmammalpummelrimmedshimmersummerslammerskimmerslimmersimmerswimmerswimmingtrimmer
sayyid
buzzbuzzarddazzledrizzledizzyfizzfuzzfuzzyfizzlefrazzledguzzlegizzardgrizzlyjazzmuzzlenozzlenuzzlepuzzlepizzarazzsizzlewhizzed
Exxon