stygian         hence， dark， gloomy

subdue          overcome， bring under control

submerge        put under water， liquid， sink out of sight

suborn          indice by bribery or smth to commit perjury

subpoena        written order requiring a person to appear in a low court

sullied         to be stained or discredited

superfluous     more then is needed or wanted

supersede       take the place of

supine          inactive， lying flat on the back

susceptibility  sensitiveness

sustain         keep from falling； maintain； suffer； give a decision

synopsis        summary or outline

taciturn        saying very little

talon           claw of a bird of prey

tamp            tap or drive down by repeated light blows

tarnished       lost brightness

taunt           contemptuous reproach， hurtful remark

tedious         tiresome

temperance      abstinence from alcohol， self-control， moderation

tenuous         thin， slender

terse           brief and to the point

thrift          care， economy， thriving， prosperous

timid           shy， easily frightened

tolerable       fairly good

tonic           smth giving strength or energy

topple          be unsteady and overturn

tortuous        full of twists and bends

tout            person who worries others to buy smth， to use his service

touting         act as tout

toy             think not seriously， handle absent-mindedly

tractable       easily controlled or guided

trend           tendency， general direction

trepidation     alarm， excited state of mind

turbulence      being uncontrolled， violent

underbid        make a lower bid then smb else

undermine       weaken gradually， at the base， make smth under

unfeigned       not pretended， sincere

unscathed       unharmed， unhurt

untoward        unfortunate， inconvenient

upbraid         scold， reproach

urbane          polite， elegant

vacillation     being uncertain， hesitating

vain            without use， value or result

valiant         brave

valorous        brave

vapor           stim， mist