TV series example of the word

The Big Bang Theory Season 8, Episode 2
...by making this class unnecessarily hard, then I'm out.

Vikings Season 1, Episode 2
No one throw their lives away unnecessarily,

The Big Bang Theory Season 12, Episode 6
I'm being unnecessarily hurtful but with a sweet voice.

The Big Bang Theory Season 12, Episode 6
I'm unnecessarily hurtful?

The Big Bang Theory Season 8, Episode 7
It's unnecessarily graphic.