Definitions

1. noun

a suffix used to form nouns denoting a quality, condition, or state, especially when referring to a person or thing as being of a specified type or degree

“a teenage-ish look about her”

2. noun

a small or insignificant amount of something

“I don’t have enough money, just a penny-ish amount left”

3. adverb

used to make a statement or description more approximate or uncertain

“he’s about five-ish years old”

4. adverb

used to make a statement or description less severe or emphatic

“I’m feeling a bit tired-ish today”