The best replacement for sad is depressed.

The best alternatives to sad are rated as following:
★★★★★  depressed
★★★★  happy
★★★  depression
★★★  sadder
★★  winter blues
★  ssd
★  delta force
★  saddened
★  angry
★  upset
★  gad
  unhappy
  disappointed

Your alternative for sad is not listed? Suggest!
Speaking about sad, one probably shouldn't forget about love sms.

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



Google Trends

Scale is based on the average worldwide traffic of sad in all years. Click on graph for more.
sad
depressed
happy