Synonyms for Undefendable:

• adj.

  •assailable (adjective)
  • conquerable,
  • vulnerable,
  • in danger,
  • weak,
  • exposed,
  • defenseless.
  •undefended (adjective)
  • unguarded,
  • endangered.

• Other synonyms:

  •adj.
  • assailable.
  •n.
  • open,
  • undefended.

Antonyms for Undefendable:

• adj.

  • assailable
    guarded, safe, protected, secure.
  • undefended
    Defended.
  • Other antonyms:
    invulnerable.