Let out and Make longer

Let out verb - Express audibly; utter sounds (not necessarily words).

Make longer and let out are semantically related in extend topic. In some cases you can use "Make longer" instead a verb "Let out", when it comes to topics like lengthen.

Let out and make longer are semantically related in extend topic. Sometimes you can use "Let out" instead a verb phrase "Make longer", if it concerns topics such as lengthen.