Cryptic crossword clue
When texting are you smart or becoming dull? 7

The most common and most likely answer to this crossword clue is the 7 letter word RUSTING

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Buddy explains!

The straight part
We know that "becoming dull" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case becoming dull = rusting.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does RUSTING mean?

RUSTING verb
  1. To oxidize, especially of iron or steel.
  2. To cause to oxidize.
  3. To be affected with the parasitic fungus called rust.
  4. To (cause to) degenerate in idleness; to make or become dull or impaired by inaction.
RUSTING noun
  1. The development of rust on a surface.

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