This article from Wired (5 Atrocious Science Clichés to Throw Down a Black Hole) describes a couple of clichéd terms which sometimes creep into science writing. I can also suggest some others that have crept into the more political writing about science which we should also try to get rid of.
1) HOLY GRAIL
2) SILVER BULLET
3) SHEDDING LIGHT
4) MISSING LINK
5) PARADIGM SHIFT
And I would add to this list words like:
These are particularly used by creationists and others attacking science. But they are also often used carelessly be scientists and supporters of science when defending science.
I would like to see these terms replaced by proper reference to evidence. After all, that is what science is all about.