Some New Words that you may not find in your old dictionaries. Use them and and sound smart.

Legacy waste : A waste material that cannot be reused and hence will last for a long time.
Cleantech (adjective): Involving Clean technology
Ex: cleantech jobs
Spaceplane : A plane that can take you to outer space
Built-to-flip (adjective): A business set up with an intention to be bought out by a bigger company.
Ex: It is a built-to-flip startup
I am not against built-to-flip companies like yours.
Photobombing : Spoiling a photo by jumping into the frame at the last moment as the photo is being taken.
Ex:  Your photobombing skill is admirable.
Headdesk (verb): To hit one's head on the desk to express frustration and annoyance.
Ex: He made me headdesk with his silly demands.