Antonyms of adj sad

3 senses of sad

Sense 1
sad (vs. glad) -- (experiencing or showing sorrow or unhappiness; "feeling sad because his dog had died"; "Better by far that you should forget and smile / Than that you should remember and be sad"- Christina Rossetti)

glad (vs. sad) -- (showing or causing joy and pleasure; especially made happy; "glad you are here"; "glad that they succeeded"; "gave a glad shout"; "a glad smile"; "heard the glad news"; "a glad occasion")
        => gladsome -- (experiencing or expressing gladness or joy; "a gladsome smile"; "a gladsome occasion")

Sense 2
sad -- (of things that make you feel sad; "sad news"; "she doesn't like sad movies"; "it was a very sad story"; "When I am dead, my dearest, / Sing no sad songs for me"- Christina Rossetti)

INDIRECT (VIA sorrowful) -> joyful -- (full of or producing joy; "make a joyful noise"; "a joyful occasion")

Sense 3
deplorable, distressing, lamentable, pitiful, sad, sorry -- (bad; unfortunate; "my finances were in a deplorable state"; "a lamentable decision"; "her clothes were in sad shape"; "a sorry state of affairs")

INDIRECT (VIA bad) -> good -- (having desirable or positive qualities especially those suitable for a thing specified; "good news from the hospital"; "a good report card"; "when she was good she was very very good"; "a good knife is one good for cutting"; "this stump will make a good picnic table"; "a good check"; "a good joke"; "a good exterior paint"; "a good secretary"; "a good dress for the office")

Similarity of adj sad

3 senses of sad

Sense 1
sad (vs. glad) -- (experiencing or showing sorrow or unhappiness; "feeling sad because his dog had died"; "Better by far that you should forget and smile / Than that you should remember and be sad"- Christina Rossetti)
       => bittersweet -- (tinged with sadness; "a movie with a bittersweet ending")
       => doleful, mournful -- (filled with or evoking sadness; "the child's doleful expression"; "stared with mournful eyes"; "mournful news")
       => heavyhearted -- (depressed)
       => melancholy, melancholic -- (characterized by or causing or expressing sadness; "growing more melancholy every hour"; "her melancholic smile"; "we acquainted him with the melancholy truth")
       => pensive, wistful -- (showing pensive sadness; "the sensitive and wistful response of a poet to the gentler phases of beauty")
       => tragic, tragical -- (very sad; especially involving grief or death or destruction; "a tragic face"; "a tragic plight"; "a tragic accident")
       => tragicomic, tragicomical -- (manifesting both tragic and comic aspects; "the tragicomic disparity...between's man's aspirations and his accomplishments"- B.R.Redman)

Sense 2
sad -- (of things that make you feel sad; "sad news"; "she doesn't like sad movies"; "it was a very sad story"; "When I am dead, my dearest, / Sing no sad songs for me"- Christina Rossetti)
       => sorrowful (vs. joyful) -- (experiencing or marked by or expressing sorrow especially that associated with irreparable loss; "sorrowful widows"; "a sorrowful tale of death and despair"; "sorrowful news"; "even in laughter the heart is sorrowful"- Proverbs 14:13)

Sense 3
deplorable, distressing, lamentable, pitiful, sad, sorry -- (bad; unfortunate; "my finances were in a deplorable state"; "a lamentable decision"; "her clothes were in sad shape"; "a sorry state of affairs")
       => bad (vs. good) -- (having undesirable or negative qualities; "a bad report card"; "his sloppy appearance made a bad impression"; "a bad little boy"; "clothes in bad shape"; "a bad cut"; "bad luck"; "the news was very bad"; "the reviews were bad"; "the pay is bad"; "it was a bad light for reading"; "the movie was a bad choice")