What 12 year olds say to sound smart. Often found said by smartasses to make someone look wrong and stupid.

I couldn’t care less (but one must keep up appearances, right?)

When used at the beginning of a sentence, this word is a variety of the 'filler' word basically. Another direct replacement for technically is essentially. Maybe the speaker sees his or her own bad speech patterns and recycles these three words while speaking. Filler words add absolutely nothing to the sentence being spoken. Other filler words include like, just, and stuff and y'know, but they tend to be in the middle of or at the end of a sentence. Filler words are rarely used in writing and are part of acquired speech habits.

The word that says, "I'm explaining something very scientific now" But means, "You don't need to listen to anything after this point."

The word that the dull kid uses to try to sound smart.

Means basically. If some thing is complicated, or a smudge complex, it can relate back to the first bit. Just look at the example...

to start a sentance instead of basically