I have come across the word in a manga. It is said by a boy who was talking about the future plan of selling prizes awarded from playing Pachinko.

Here is the sentence including the word:

いつまでも たたき売{う}りなんぞしてやせんっ

I'm not sure if the word is related to the word 痩{や}せる.


It has nothing to do with 「[痩]{や}せる」(= to become slimmer); That is for sure.

「してやせん」=「して + や + せん」

「して」, needless to say, is the て-form of 「する」.

「や」 is a colloquial (or regional) pronunciation of 「は」.

See here: 大辞林 「や(係助)口頭語で、係助詞『は』がなまったもの。『誰も[来]{き}やしない(こやしない)』『霧で何も見えやしない』」 (Toward the bottom of the page)

「せん」 means 「しない」.

「~~してせん」=「~~していない」 = "would/will not be doing ~~", "am not doing ~~", etc.

Other examples with the same structure:

「[誰]{だれ}も[食]{た}べせん!」=「誰も食べしない!」 = "No one will eat it!"

「[車]{くるま}なんか[買]{か}えせん!」=「車なんか買えしない」 = "There is no way I could afford a car!"

  • 2
    I agree that this is correct if the boy is not speaking politely. Though I feel negating する itself using する in this way is not common.
    – naruto
    May 31 '15 at 5:53
  • Maybe there should have been a reference to difference of intonation between してはせん and してません.
    – user4092
    May 31 '15 at 14:29
  • You said「~~してやせん」=「~~してはいない」. I'm not sure this is right. I think 「~~してやせん」 uses the pattern <masu-stem>+はしない: 「~~してやせん」=「~~してる」+「はしない」=「~~してはしない」 May 31 '15 at 15:18
  • 1
    「して」, needless to say, is the 連用形 of 「する」 ん?「し」が「する」の連用形で、「て」は接続助詞ちゃう? 勝手に「て形」に変えたらアカンやろか?
    – Chocolate
    Jun 3 '16 at 17:51
  • 1
    – user4032
    Jun 4 '16 at 1:04

ま is sometimes replaced with や:

  • もうしわけありやせん (もうしわけありません)
  • ありがとうございやす (ありがとうございます)
  • 元気でありやす (元気であります)

If that's the case with your example, that part simply means してません.

I'm not sure if this is a real dialect spoken somewhere, or it's a kind of slurred speech not particularly associated with a certain dialect.

  • Completely disagreed. Typing my own answer.
    – user4032
    May 31 '15 at 5:21
  • 3
    – naruto
    May 31 '15 at 5:22

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