[1] : WordNet (r) 2.0

close up
     adv : very close; "without my reading glasses i can hardly see
           things close up"; "even firing at close range he
           missed" syn: at close range
     v 1: block passage through; "obstruct the path" syn: obstruct,
           obturate, impede, occlude, jam, block ant:
          free
     2: refuse to talk or stop talking; fall silent; "the children
        shut up when their father approached" syn: clam up, dummy
        up, shut up, belt up, button up, be quiet, keep
        mum ant: open up
see also:
at close range obstruct obturate impede occlude jam 
block free clam up dummy up shut up 
belt up button up be quiet keep mum open up 

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

140 moby thesaurus words for "close up":
   approach, bang, bar, barricade, batten, batten down, block,
   block up, blockade, bolt, boom shot, button, button up, cap,
   carry to completion, cease, center, centralize, chock, choke,
   choke off, cicatrize, clap, clean up, climax, close, close down,
   close in, close off, close out, close shop, close tight,
   close with, come together, complete, concenter, concentralize,
   concentrate, conclude, constrict, contain, contract, converge,
   cover, crowd, crown, culminate, debar, deuce shot, dog, end,
   fall in with, fasten, finalize, finish, finish off, finish up,
   fold, fold up, follow-focus shot, full shot, funnel, get done,
   get it over, get through, get through with, granulate, group shot,
   heal, heal over, intersect, jam, key, kinescope, knit, latch, lock,
   lock out, lock up, long shot, matte shot, medium shot, meet,
   mop up, motion picture, narrow the gap, nip, obstruct, occlude,
   pack, padlock, pan shot, panoramic shot, perfect, pinch, plumb,
   process shot, rap shot, retake, right itself, round out,
   run together, scab over, seal, seal off, seal up, secure, set,
   shot, shut, shut down, shut off, shut out, shut the door,
   shut tight, shut up, shut up shop, shutter, slam, snap, squeeze,
   squeeze shut, stifle, stop up, strangle, strangulate, suffocate,
   take, taper, terminate, top off, top out, travel shot,
   trucking shot, unite, wind up, wrap up, zip up, zipper,
   zoom shot

Ball Up >> B Words
Ball Up, definition of term: Ball Up
ball+up_pag1.html

Bang Up >> B Words
Bang Up, definition of term: Bang Up
bang+up_pag1.html

Backed Up >> B Words
Backed Up, definition of term: Backed Up
backed+up_pag1.html

Back Up >> B Words
Back Up, definition of term: Back Up
back+up_pag1.html

Ante Up >> A Words
Ante Up, definition of term: Ante Up
ante+up_pag1.html

Act Up >> A Words
Act Up, definition of term: Act Up
act+up_pag1.html