KEY: Sad.
SYN: Heavy, grave, dull, sorrowful, woe-begone, calamitous, dismal, doleful, mournful, gloomy, dejected, depressed, cheerless, serious, downcast, grievous, melancholy, saturnine.
ANT: Light, light-hearted, cheerful, joyful, joyous, gay, glad, exhilarating, exhilarated, happy, blithe.
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KEY: Saddle.
SYN: Impose, burden, load, shackle, clog, charge, encumber.
ANT: Rid, relieve, exonerate, disburden, liberate, disencumber.
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KEY: Safe.
SYN: Secure, unendangered, secured, sure, protected, impregnable, trustworthy, certain.