The best replacement for together is altogether.

The best alternatives to together are rated as following:
★★★★★  altogether
★★  marriage
★★  yojimbo
★★  getting married
★  hang separately
★  kindermusik
★  apart
★  togather
★  together
★  separate
★  devonthink
★  married
★  in solitary
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  yep
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  idocument
  evernote
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  band together
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  opposites attract
  get married
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  separately
  we hang separately
  get together

Your alternative for together is not listed? Suggest!
Speaking about together, one probably shouldn't forget about commitment.

Other search terms related to together and their ratings are:
★★★★★ commitment
You have in mind a companion for together and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of together in all years. Click on graph for more.
together
altogether
marriage