Answer:
1. pinkish - something that is colored in a light tone of pink or similar color.
2. pearly - something that looks like a pearl in terms of beauty and color.
3. successful - someone who has success; the state of having success.
4. national - belonging to a certain nation.
5. profitable - something or someone that is able to make a profit.
6. odorous - something that smells, that has an odor.
7. purify - to make something pure.
8. brighten - to make something bright.
9. acceptance - the state or condition of accepting something.
10. strengthen - to make something strong.
Explanation:
All the words above have one thing in common: they are all formed with suffixes. Suffixes are affixes placed at the ending of a word with the purpose of modifying it, forming a new word. Different suffixes convey different meanings. For instance, the suffix -able means "capable of being or doing something", while the suffix -ous forms adjectives that indicate the possession of a quality. When we know suffixes, we are able to infer the meaning of words that have them.