From the given options choose the one which is opposite in meaning to the word given below 

GREAT

Tiny

The word that is opposite in meaning to great is tiny.

• Great means large in size, extent, or significance.
• Tiny means very small in size.

The other options are not opposites of great.

• Short means not long in length.
• Unknown means not known or familiar.
• Weak means not strong or powerful.