Well it's been a few days, so I figure, why not? Are you ready to solve another Add-A-Gram chain? Each word can form the next word by adding a letter and then forming an anagram. For example, an insect in a beverage in red wood would be bee -> beer -> ember.

Here is today's Add-A-Gram chain definition:

a natural base in a grapheme in a division in a chieftain in imbibe in an extension in a Plymouth in a piece of pie in a metamorphic rock in a precept in surpassing in pertaining to two related systems in prophylactic repeating in neutralizing.

As always, happy Add-A-Gramming!


1 Answer 1


I think it is:

e — a natural base
ae — a grapheme, the ligature æ
era — a division (of time)
earl — a chieftain
learn — imbibe (or absorb)
antler — an extension
reliant — a Plymouth (car model)
triangle — a piece of pie, kind of
granulite — a metamorphic rock
regulation — a precept
outlearning — surpassing
congruential — pertaining to two related systems
countersignal — prophylactic repeating (in radio communicationq)
countersealing — neutralizing

Note: I'm not quite sure about the meaning of the last word.

  • $\begingroup$ Got stuck after the Plymouth part.. Well done! $\endgroup$
    – quarkle
    Jan 18, 2017 at 8:35
  • $\begingroup$ I only had 11 of these when you posted... I missed the car model and didn't realize "prophylactic" was related to telecommunication. $\endgroup$
    – MikeQ
    Jan 18, 2017 at 8:35
  • 2
    $\begingroup$ The car models were my foot in the door here from which I worked up and down. I somehow suspected that it was about the car brand and tried the models with seven letters, which I got from the Wikipedia page. (It had to be seven letters, because the first one clearly was e.) $\endgroup$
    – M Oehm
    Jan 18, 2017 at 8:40
  • $\begingroup$ Well done! I wasn't sure if anyone would get the last two. Then again, this is Puzzling SE, and this is where geniuses live :) $\endgroup$ Jan 18, 2017 at 16:03

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