totemism
ideology
Creed. (Also, a five letter word for a set of beliefs beginning with "d" is dogma).
creed, credo
The word is credo.
start. set. sat.
Many nouns ending in T can form a possessive t's (cat's, hat's). As a contraction, you could use let's (let us), that's (that is) or what's (what is) Other T word examples using nouns: The net's broken. (net is broken) The outlet's not working. The set's ready.
religion? Religion is not a word for a set of beliefs but a word for a set of beliefs that explain existence as well as meaning to the universe. Ideology is probably the closest word that explains a set of beliefs probably.
A statement or set of beliefs is sometimes called a creed or a confession.
t
Some four letter words ending with T are:baitbeetbeltbentblotboatbootbuntcantcartcastchatclotcoltcultcurtdartdentdirtdoltdusteastfactfastfeetfeltfestfistfootfortfretgaitgiltglutgnathaltheathefthilthoothosthuntjestjiltjustkeptkiltknitknotlastlentlintlistlootlostlustMaltmartmastmeatmeetmintmistmoltmootmostmustneatnestomitoustpantpartpastpeatpentpestpintpoetportpuntquitraftrantrentriftrootruntrustSaltseatsentsiftsiltskitsnitsootsortspitspotsuetswattartteattenttestthattinttoottorttrotunitvastventvestvoltwaitwantwartwattweftweltwentweptwestwhetwiltyurt
A five-letter word for meadow ending in T would be veldt.
A 6 letter word for an offensive remark ending with t is cumquat.