A six letter word that starts with U is upward.
Some six letter words with the fifth letter I are:acaciaacquitaffairafraidanemiaauntiebanditbarriobigwigbionicbobbinboogiecandidcatnipcervixcitricclericcliniccoffincolliecommitcookiecosmiccousincreditcriticculpritdahliadebrisdeceitdetaindevoiddimwitdomaineclairentaileroticethnicfabricferricforbidfrolicgarlicgerbilgossipGothichectichermitherniaheroinhorridhubrishybridiconicimpairinlaidironicitalicjerkinliquidmantismarginmarlinmemoirmohairmosaicmuffinmythicnapkinniacinnitricobtainorchidordainoriginoutfitoxtailpallidpectinpelvispencilpermitphobiapicnicpotpieprefixprofitpublicpulpitrabbitraisinrecoilremainrepairrookierusticsepticsordidspiritstaticstudiostupidsubmitsuffixsummittactictennistidbittorridtragictropicturnipurchinverminvictimviolinvirginweevilzinnia
engageenrageorange
galaxy
frilly
A science word that is six letters ans starts with the letter c is convex.
mayday? sounds about right there
physic
alohasclavaeclavalclimaxclinalclonalelijahfloraefloralflorasflymanflywayglobalglomalglycanllamasplagalplanarplazaspleiadplicaeplicalpluralsloganslovak
edicts
Asians!
littergingerairmenzipperwintersilvermisterringerdieselcitieshiddennickelwickerdiapereitherbilledkidneykilledriskedpiecessigned