i need help...............

Answer:
1. Opposite of believable Prefix: un suffix : able
2. Without use . It only has a suffix: - less
3. They both have the suffix -less (?)
4. Opposite if forgettable Prefix: un suffix: able
5. Eg: I was unable to pick the heavy box up.
Prefix: un meaning opposite of able
Suffix: able meaning without ability
Answer:
Explanation:
Unbelievable means that something is hard to believe.
un- not
able- capable of doing
Speechless and effortless are similar because they are done without something. Speechless means you can't speak. Effortless means it can be done without any effort
Unforgetable means you cannot forget something. Its prefix is un, which means not. Its suffix is able which means capable of doing.