[1] : WordNet (r) 2.0

slow down
     v 1: lose velocity; move more slowly; "the car decelerated" syn:
           decelerate, slow, slow up, retard ant: accelerate
     2: become slow or slower; "production slowed" syn: slow, slow
        up, slack, slacken
     3: cause to proceed more slowly; "the illness slowed him down"
        syn: slow, slow up
     4: reduce the speed of; "he slowed down the car" syn: decelerate
        ant: accelerate
     5: become less tense, rest, or take one's ease; "he relaxed in
        the hot tub"; "let's all relax after a hard day's work"
        syn: relax, loosen up, unbend, unwind, decompress
        ant: tense
see also:
decelerate slow slow up retard accelerate slow up 
slack slacken relax loosen up unbend 
unwind decompress tense 

[2] : Moby Thesaurus II by Grady Ward, 1.0

151 moby thesaurus words for "slow down":
   abate, allay, alleviate, arrest, assuage, attemper, backpedal,
   backwater, bank the fire, block, blunt, bog down, boycott, brake,
   bridle, chasten, check, clip the wings, confine, constrain,
   contain, control, cool, cool off, curb, curtail, curtail expenses,
   cut back, cut corners, cut down, damp, dampen, de-emphasize,
   deaden, deadlock, decelerate, decrease, delay, detain, diminish,
   dompt, downplay, drag, draw rein, dull, ease, ease off, ease up,
   enjoin, extenuate, go on strike, go out, govern, guard, halt,
   hang up, hinder, hold, hold at bay, hold back, hold fast, hold in,
   hold in check, hold in leash, hold out, hold up, impede, inhibit,
   keep, keep back, keep from, keep in, keep in check,
   keep under control, keep within bounds, lag, lay,
   lay under restraint, lenify, lessen, let down, let up, let up on,
   lighten, lock out, lose ground, lose momentum, lose speed,
   make late, mire, mitigate, moderate, modulate, obstruct, obtund,
   palliate, pare down expenses, picket, play down, prohibit, pull,
   pull in, qualify, reduce, reduce the temperature, reef, rein,
   rein in, relax, restrain, retard, retrench, revolt, roll back,
   set back, shut it down, sit down, slack, slack off, slack up,
   slacken, slow, slow up, smother, snub, sober, sober down, soften,
   stall, stay, stifle, stop, straiten, strike, stymie, subdue,
   suppress, take a reef, take in sail, tame, temper, throttle down,
   tone down, tune down, unbend, underplay, unlax, unwind, walk out,
   weaken, withhold

Close Down >> C Words
Close Down, definition of term: Close Down
close+down_pag1.html

Climb Down >> C Words
Climb Down, definition of term: Climb Down
climb+down_pag1.html

Clamp Down >> C Words
Clamp Down, definition of term: Clamp Down
clamp+down_pag1.html

Come Down >> C Words
Come Down, definition of term: Come Down
come+down_pag1.html

Cool Down >> C Words
Cool Down, definition of term: Cool Down
cool+down_pag1.html

Die Down >> D Words
Die Down, definition of term: Die Down
die+down_pag1.html

Cut Down >> C Words
Cut Down, definition of term: Cut Down
cut+down_pag1.html

Crack Down >> C Words
Crack Down, definition of term: Crack Down
crack+down_pag1.html

Back Down >> B Words
Back Down, definition of term: Back Down
back+down_pag1.html

Choke Down >> C Words
Choke Down, definition of term: Choke Down
choke+down_pag1.html

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