The Oxford Thesaurus An A-Z Dictionary of Synonyms INTRO ...

isk, endanger, jeopardize, put in jeopardy: All life is
threatened if the environment is not better looked after. 3
impend, loom; augur, portend, presage, forebode: The creatures
crawl into their burrows if danger threatens. The gathering
clouds threatened rain.
threatening
adj. ominous, menacing, portentous, sinister, looming,
inauspicious, minatory, minacious, comminatory, intimidating,
foreboding, imminent, impending: Threatening storm clouds began
to build in the western sky.
threshold n. 1 sill, door-sill, doorstep; doorway, entrance: He stood at
the threshold and peered into the room. 2 brink, verge, edge,
beginning, commencement, outset, start, dawn: The emigrants
were at the threshold of a new life.
thrift n. economy, husbandry, care, carefulness, prudence, parsimony,
frugality, thriftiness, sparingness, scrimping, skimping;
penuriousness, close-fistedness, tight-fistedness,
niggardliness, stinginess, miserliness: Only through our thrift
were we able to save enough for a new car.
thrifty adj. economical, careful, prudent, parsimonious, frugal,
sparing, scrimping, skimping; penurious, close-fisted,
tight-fisted, niggardly, stingy, miserly, penny-pinching, cheap:
He talked about the need to save money and be thrifty in every
way.
thrill n. 1 excitement, titillation, frisson, tingle, tingling
(sensation), stimulation, Colloq kick, bang, charge, buzz:
Victor feels a tremendous thrill when his daughter wins a tennis
match. 2 tremor, quiver, quivering, shudder, shuddering,
tremble, trembling, flutter, throb, throbbing, tremor,
pulsation, vibration: The only warning was a slight thrill in
the earth just before the main quake.
--v. 3 excite, stimulate, animate, electrify, galvanize,
enliven, stir, titillate, touch, strike, move, impassion,
arouse, Slang send, give (someone) a kick: They were thrilled
to discover that they had won an award.
thrilling adj. exciting, stimulating, animating, electrifying,