how to say “thin” in Hebrew
רָזֶה, דַּק
When speaking about a person, the word for thin is רָזֶה 
listen and repeat for a male, and רָזָה listen and repeat for a female.
listen and repeat for a male, and רָזָה listen and repeat for a female.For example:
הִיא עָשְׂתָה דִּיאֶטָה וְעַכְשָׁיו הִיא מְאֹד רָזָה.
She went on a diet and now she is very thin.
When speaking about an object, however, the word is דַּק listen and repeat for something masculine and דַּקָּה listen and repeat for something feminine.
listen and repeat for something masculine and דַּקָּה listen and repeat for something feminine.For example:
זֶה לֹא סֶפֶר דַּק בִּמְיֻחָד.
It’s not a particularly thin book.
So we’ve covered people and objects. What about animals? There, Modern and Biblical Hebrew are divided. While in Modern Hebrew animals are רָזִים listen and repeat and רָזוֹת listen and repeat, in Biblical they are דַּקִּים listen and repeat and דַּקּות listen and repeat.
listen and repeat and רָזוֹת listen and repeat, in Biblical they are דַּקִּים listen and repeat and דַּקּות listen and repeat.Minutes are also called דקות because they are slivers of time.