IPA: /ˌʌndɪˈskraɪbəl/
KK: /ʌndɪˈskraɪbəl/
Something that cannot be described or explained in words.
The beauty of the sunset was undescribable, leaving everyone speechless.
Undescribable → It is formed from the prefix 'un-' (meaning not) and the root 'describere' (from Latin, meaning to write down or describe) and the suffix '-able' (meaning capable of). The word 'undescribable' means not capable of being described or beyond description.
Think of 'not' ('un-') being added to 'describe' ('describere') and 'able' meaning capable. This helps you remember that 'undescribable' refers to something that cannot be adequately described.