more power to your elbow

Possibly an elaboration of more power to you, with the speaker expressing the wish that the person addressed will have more strength to achieve their goal.

• (Received Pronunciation) IPA^(key): /mɔː ˈpaʊə tʊ jə ˈɛlbəʊ/

• Audio (Southern England)

  (file)

• (General American) IPA^(key): /mɔɹ ˈpaʊɚ tʊ jɚ ˈɛlboʊ/
• Hyphenation: more pow‧er to your el‧bow

more power to your elbow

1. (British) Used to express admiration of a person coupled with wishes for their continued success in an endeavour of their own choosing: all the best; good luck.

   Synonyms: best of luck, more power to your arm

   • 1959 May, G. F. Fiennes (reviewer), “New Reading on Railways: British Railways Today and Tomorrow. By G. Freeman Allen. Ian Allan. 25s.”, in Trains Illustrated, London: Ian Allan Publishing, →ISSN, →OCLC, page 271:

     Naturally the forms of traction occupy Mr. [Geoffrey] Freeman Allen much of his time and he sits on no fence here; he is an "electrifier", with good reasons advanced—more power to his elbow.

• “more power to a person (also a person’s elbow, arm), phrase” under “power, n.¹”, in OED Online ⁠, Oxford, Oxfordshire: Oxford University Press, June 2021.
• “more power to someone, phrase”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.