Meaning of -ISH in English
~ is added to adjectives to form adjectives which indicate that someone or something has a quality to a small extent. For example, something that is largish is fairly large.
She is tallish, brown-haired, and clear-skinned...
With her was a youngish man in a dinner jacket.
~ is added to nouns and names to form adjectives which indicate that someone or something is like a particular kind of person or thing. For example, ‘childish’ means like a child, or typical of a child.
She had entirely lost her girlish chubbiness.
...a man of monkish appearance.
~ is added to words referring to times, dates, or ages to form words which indicate that the time or age mentioned is approximate.
I’ll call you guys tomorrow. Noon~...
The nurse was fiftyish.
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012