• unhackble,
• unhackablee,
• unahackable,
• unhacakble,
• un-hackable,
• un-hackble,
• uhnackable,
• unhcakable,
• un-hacable,
• un-hackabale

• insurmountable,
• unbreakable,
• impenetrable,
• untouchable,
• secure,
• bulletproof,
• indestructible,
• unreachable,
• invulnerable,
• unassailable.

The adjective form of "unhackable" is "unhackable". This word describes something that cannot be hacked or accessed without authorization or a password.

The plural form of "unhackable" is "unhackables".

The singular form of the word "unhackable" is "unhackable". The word does not change in its singular form.