IPA: /ˈfæstənɪŋ/
KK: /ˈfæstənɪŋ/
A device or method used to hold or secure two or more objects together tightly.
The fastening on the backpack broke, causing everything to fall out.
Fastening → It is formed from "fast" (from Old English "fæst", meaning firmly fixed or secure) and "-ening" (a suffix indicating the action or process of). The word "fastening" refers to the action or process of making something secure or firmly fixed.
Think of something being made 'secure' ('fast') and the '-ening' showing that it's an action. This helps you remember that 'fastening' means the act of securing something.