Synonyms for On the line:

• adj.

  •defenseless (adjective)
  • unprotected,
  • in line of fire,
  • indefensible,
  • on line,
  • Caught,
  • unarmed,
  • on the spot,
  • naked,
  • poor,
  • out on limb,
  • endangered,
  • hands tied,
  • helpless,
  • exposed,
  • unguarded,
  • wide open,
  • open,
  • up the creek,
  • pigeon,
  • like a clay pigeon,
  • like a sitting duck,
  • weak.
  •pregnable (adjective)
  • Attackable.
  •sincere (adjective)
  • heartfelt,
  • no-nonsense,
  • devout,
  • outspoken,
  • honest to god,
  • unaffected,
  • forthright,
  • faithful,
  • artless,
  • earnest,
  • trustworthy,
  • guileless,
  • aboveboard,
  • square,
  • plain,
  • actual,
  • regular,
  • true,
  • serious,
  • bona fide,
  • candid,
  • righteous,
  • unfeigned,
  • frank,
  • real,
  • wholehearted,
  • like it is,
  • dear,
  • genuine,
  • Meant,
  • unpretentious,
  • natural,
  • saintly.
  •veracious (adjective)
  • reliable,
  • direct,
  • on the up and up,
  • accurate,
  • dependable,
  • truthful,
  • right,
  • honest,
  • ethical,
  • straight arrow,
  • just,
  • veridical,
  • straightforward,
  • credible,
  • legit,
  • straight-arrow,
  • up front,
  • valid,
  • factual,
  • undeceptive,
  • straightarrow,
  • strict,
  • high-principled,
  • kosher.
  •vulnerable (adjective)
  • sensitive,
  • susceptible,
  • liable,
  • accessible,
  • unsafe,
  • tender,
  • sucker,
  • assailable,
  • sitting duck,
  • thin-skinned,
  • ready.

• adv.

  •frankly (adverb)
  • freely,
  • candidly,
  • directly,
  • on the level,
  • plainly,
  • level,
  • openly,
  • straight.

• n.

  •forefront/foreground (noun)
  • front,
  • center,
  • fore,
  • beginning,
  • limelight,
  • state-of-the-art,
  • vanguard,
  • lead,
  • focus,
  • spearhead.
  •jeopardy (noun)
  • peril,
  • risk,
  • hazard,
  • accident,
  • Endangerment,
  • venture,
  • out on a limb,
  • chance,
  • precariousness,
  • vulnerability,
  • liability.

• Other synonyms:

  •Other relevant words:
  • veracious.

Antonyms for On the line:

• adj.

  • defenseless
    strong, powerful.
  • sincere
    false, tricky, insincere, trivial, dishonest, counterfeit, unreal, unimportant, deceitful, flippant, invalid, devious, untrustworthy, unserious.
  • veracious
    untrue.
  • vulnerable
    protected, safe, secure, closed, unsusceptible, guarded.

• adv.

  • frankly
    secretively, deviously, dishonestly, insincerely.

• n.

  • forefront/foreground
    unimportance, back, background, rear.
  • jeopardy
    plan, protection, safety, assurance, surety, certainty.