Synonyms for Rant and rave:

• v.

  •be angry (verb)
  • rage.
  •rage (verb)
  • yell,
  • splutter,
  • seethe,
  • snap at,
  • be uncontrollable,
  • be furious,
  • let off steam,
  • be beside oneself,
  • work oneself into sweat,
  • boil over,
  • steam,
  • blow one's top,
  • champ at bit,
  • scream,
  • foam at the mouth,
  • look daggers,
  • scold,
  • make a fuss over,
  • fulminate,
  • have a tantrum,
  • rave,
  • fume,
  • roar,
  • fret,
  • fly off the handle,
  • bristle,
  • tear,
  • rant,
  • storm,
  • go berserk,
  • erupt,
  • blow a fuse,
  • surge,
  • throw a fit,
  • rampage,
  • rail at,
  • overflow,
  • have a fit,
  • chafe,
  • blow up.
  •ramble (verb)
  • lose the thread,
  • talk nonsense,
  • be diffuse,
  • Excurse,
  • beat around bush,
  • get off the subject,
  • harp on,
  • talk off top of head.
  •talk aimlessly, endlessly (verb)
  • ramble.

• Other synonyms:

  •rage
  • foam at mouth,
  • going berserk,
  • throwing a fit,
  • blowing one's top,
  • raging,
  • boiling over.

Antonyms for Rant and rave:

• v.

  • rage
    praise, be calm, be happy, flatter, be quiet, compliment.
  • ramble
    shorten, reduce, curtail, go direct, compress, abridge, condense, lessen, stay, be direct, decrease.