fromEnglish Grammar Today
We can add the suffixes-ishand -ytowords in informal contexts to make the reference sound deliberately vague and approximate.
We commonly use the suffix-ishwhen we refer to numbers, times and quantities:
Ok, I’ll come and collect you from your house at sevenish.
A:How old do you think he is?
B:Fortyish.Possibly older.
We can add-ishto adjectives, adverbs and prepositions:
A:Is he tall, her new boyfriend?
B:Well, tallish.
A:Is it far from the supermarket?
B:No, but it’s near the cinema, well, nearishto the cinema.
-ishand-yare not normally interchangeable.-ishis more common than -yand-yis principally used with colours (though not black or white):
What colour tie do you think goes with this shirt? The green one? Or should it be the blueyone?