Synonyms for Standing room only:

• adj.

  •crowded (adjective)
  • cramped,
  • packed,
  • SRO,
  • loaded,
  • Crammed,
  • stuffed,
  • jam-packed,
  • huddled,
  • brimming,
  • chock-full,
  • populous,
  • thick,
  • Mobbed,
  • compact,
  • close,
  • clean,
  • tight,
  • dense,
  • sold out,
  • jammed,
  • crushed,
  • brimful,
  • overflowing,
  • thickset,
  • awash,
  • teeming.
  •Other relevant words: (adjective)
  • elbow-to-elbow,
  • sardined,
  • massed,
  • topped off,
  • full house,
  • up here,
  • full up,
  • wall-to-wall,
  • filled to the rafters,
  • swarming,
  • fit to bust,
  • lousy with,
  • up to here,
  • crowded,
  • wall to wall,
  • mob scene,
  • up to the hilt,
  • thronged,
  • stiff with.

• n.

  •capacity (noun)
  • expanse,
  • magnitude,
  • accommodation,
  • compass,
  • quantity,
  • retention,
  • amplitude,
  • sufficiency,
  • burden,
  • measure,
  • bulk,
  • spread,
  • contents,
  • scope,
  • dimensions,
  • size,
  • sweep,
  • reach,
  • latitude,
  • range,
  • mass,
  • full,
  • space,
  • proportions.
  •Other relevant words: (noun)
  • extent,
  • room,
  • capacity,
  • holding ability,
  • holding power,
  • fulls.

• Other synonyms:

  •Other relevant words (noun):
  • filled,
  • satiated,
  • overfull,
  • surfeited,
  • plenary,
  • soaked,
  • bulging,
  • bursting,
  • swollen,
  • Topful,
  • chuck-full,
  • replete,
  • overstuffed,
  • congested,
  • saturated.

Antonyms for Standing room only:

• adj.

  • crowded
    imprecise, unfilled, loose, empty, uncongested, uncrowded, deserted.

• n.

  • capacity
    impotence, limitation, inability, incompetence.