Thunderwave is a powerful shockwave that you send toward your enemy. It includes pushing effects and a loud boom. It's hard to look at this spell and not have fun. The spell requires both a verbal component and a somatic component. Your character must say or do something to cast the spell.  A bard might twang his lute and sing the word for thunder in his home language. An example of a Druid is to chant words of power or bang his staff on a floor. You might see the character make a lot of arm movements and mimic their opponents, or even unleash some lightning tendrils with thunder to zap enemies and force them backward. Lastly, the ability is also available to some subclasses like the Eldritch Knight Fighter or the Tempest Cleric. You might find it interesting for your cleric to channel the power and fury of the storm into their spell, or for your fighter to bang on his shield to send back enemies with the shockwave. The way your characters cast magic depends on their backgrounds. However, if you are open to this possibility, it can make casting a cool spell even more enjoyable!