Synonyms for Shoulder to shoulder:

• a. & adv.

  •side by side (adjective, adverb)
  • alongside,
  • juxtaposing,
  • parallel,
  • abreast.

• adv.

  •abreast (adverb)
  • equal,
  • opposite,
  • Beside,
  • in alignment,
  • in line,
  • shoulder to shoulder,
  • level.
  •cheek by jowl (adverb)
  • very intimate,
  • close,
  • hand in hand,
  • crowded,
  • hand in glove.
  •side by side (adverb)
  • more side-by-side,
  • more juxtaposing,
  • more beside,
  • most juxtaposing,
  • most side-by-side,
  • most abreast,
  • more abreast,
  • most alongside,
  • most side by side,
  • most beside.

• Other synonyms:

  •adv
  • cheek by jowl,
  • close together,
  • side by side,
  • arm in arm,
  • by the side of,
  • on one side,
  • side-by-side,
  • beside one another,
  • cheek to cheek,
  • yardarm to yardarm.