| PLINTH | Base, initially perhaps long, is not that heavy |
| ONEPOUND | British coin is not that heavy |
| KILO | Important short report is not that heavy |
| CUBIT | Copper coin couple found in yard, perhaps, long ago (5) |
| SWITCH | Devon, Cornwall, perhaps, long for change? |
| SORDID | Base, initially seeming old, rather, was suitable |
| LANGUAGE | English perhaps long for Scottish union over extended period |
| AWOL | Off base, initially |
| DREAM | "_____ is not that which you see while sleeping, it is something that does not let you sleep." (APJ Kalam) |
| TON | Perhaps not all that heavy? (3) |
| SPENDS | "The problem is not that people are taxed too little, the problem is that government ___ too much": Ronald Reagan (6) |
| INTRO | Opening bars is not that risky - only initially |
| OFRUST | The rotten state that heavy metal is in is wasted on Doves (2-4) |
| KINGDOM | The rotten state that heavy metal is in is wasted on Doves (7) |
| RADIO | Radius, not quite so long, is set? |
| AWAKE | "Long is the night to him who is _____" (Dhammapada) |
| LESSANDLESS | "The tragedy of modern man is not that he knows ____ about the meaning of his own life, but that it bothers him ____" (Vaclav Havel) |
| DOTH | "Gold all is not that ___ golden seem" (Spenser) |
| THIS | Shortened article is not that |
| TWOFACED | The Mobius strip is not that devious |