Synonyms for Over-long:

• adj.

  •dragging (adjective)
  • dull.
  •endless (adjective)
  • continual.
  •long (adjective)
  • slow,
  • diffusive,
  • dilatory,
  • tardy,
  • for ages,
  • late,
  • forever and a day,
  • delayed.
  •Other relevant words: (adjective)
  • prolonged,
  • stringy,
  • towering,
  • monotonous,
  • extensive,
  • humdrum,
  • unlimited,
  • sustained,
  • constant,
  • immeasurable,
  • far-off,
  • countless,
  • continued,
  • eternal,
  • verbose,
  • measureless,
  • enlarged,
  • long,
  • incalculable,
  • long-drawn-out,
  • unsurpassable,
  • perpetual,
  • lengthy,
  • diffuse,
  • immortal,
  • boundless,
  • multitudinous,
  • limitless,
  • unbroken,
  • padded,
  • undivided,
  • spread out,
  • enduring,
  • lanky,
  • incessant,
  • tedious,
  • lasting,
  • remote,
  • drawn out,
  • without end,
  • indeterminate,
  • wearisome,
  • never-ending,
  • elongate,
  • stretched,
  • infinite,
  • outstretched,
  • very long,
  • longish,
  • continuous,
  • distant,
  • undying,
  • elongated,
  • going slowly,
  • lofty,
  • interminable,
  • running,
  • faraway,
  • boring,
  • great,
  • illimitable,
  • expanded,
  • uninterrupted,
  • tiresome,
  • protracted,
  • no end of,
  • amaranthine,
  • unending,
  • Overlong,
  • numberless,
  • drawn-out,
  • stretching,
  • tall,
  • everlasting,
  • rangy,
  • ceaseless,
  • lengthened,
  • prolix,
  • high,
  • dragging,
  • self-perpetuating,
  • stretch,
  • far-reaching,
  • wordy,
  • lingering,
  • deathless,
  • unfathomable,
  • unbounded,
  • untold,
  • spun out,
  • gangling,
  • no end to,
  • long-winded,
  • windy.
  •overlong (adjective)
  • deep.

• Other synonyms:

  •Other relevant words (noun):
  • prosaic,
  • Tautologous,
  • circumlocutory,
  • ho-hum,
  • roundabout,
  • drab,
  • prosy,
  • dry-as-dust,
  • blah,
  • wearing,
  • garrulous,
  • tautologic,
  • colourless,
  • stretched out,
  • tiring,
  • banal,
  • loquacious,
  • vapid,
  • routine,
  • uninteresting,
  • unexciting,
  • Long-drawn,
  • exhausting,
  • talkative,
  • unchanging,
  • extended,
  • wearying,
  • changeless,
  • automaton-like,
  • Fatiguing,
  • repetitious,
  • unvarying,
  • marathon.

Antonyms for Over-long:

• adj.

  • dragging
    energizing, lively, exciting, interesting.
  • endless
    finished, stopping, brief, countable, irregular, bounded, measurable, ephemeral, fleeting, interrupted, changing, finite, finishing, halting, temporary, broken, infrequent, ending, limited, transient, terminable, restricted, discontinuous, Ceasing, intermittent, occasional, calculable, completing, inconstant, passing, changeable, completed.
  • lengthy
    abbreviated, Curtailed, shortened.
  • long
    abridged, short, evanescent, on time.