key into

present singular third person keys into · participle present keying into · participle past keyed into · past keyed into

1. transitiveTo put (someone) into (a particular state, emotion etc.).First known use 19th c.
2. intransitiveTo cohere with; to accord with, to be in keeping with.First known use 20th c.

   [T]he sheer insistence here on these myths of Greek victory, and the repeated variations on the theme through different legendary cycles, key into the idea of the Parthenon as a monument of Athenian triumph.

   2002, Mary Beard, The Parthenon, Profile Books, published 2010, page 144

3. transitiveTo make (someone) focus or concentrate on (something); to make (someone) understand.First known use 20th c.

   Walter wasn't on the same page as the rest of us at first, but we talked about it and keyed him into it.