Spanish edit

Etymology edit

Alteration of a pie juntillo, with change of gender under the influence of similar locutions such as a sabiendas, en volandas etc.

Adverb edit

a pies juntillas

  1. with both feet together
  2. (figuratively, idiomatic) (of believing something etc) firmly, totally, absolutely
  3. (figuratively, idiomatic) (of following something) by the letter

Further reading edit