how to say “long” in Hebrew
אָרֹךְ
For example:
מִלְחָמָה וְשָׁלוֹם הוּא סֵפֶר אָרֹךְ מְאֹד.
War and Peace is a very long book.
When describing something other than a single masculine object, the word changes form a bit, so that one long feminine object is אֲרֻכָּה 
listen and repeat, several masculine or mixed-gendered objects are אֲרֻכִּים listen and repeat and several feminine object are אֲרֻכּוֹת listen and repeat.
listen and repeat, several masculine or mixed-gendered objects are אֲרֻכִּים listen and repeat and several feminine object are אֲרֻכּוֹת listen and repeat.For example:
טוֹלְסְטוֹי כָּתַב סְפָרִים אֲרֻכִּים מְאֹד.
Tolstoy wrote very long books.
