in anticipation Definition

1. A feeling of excited expectation.

Example: waited with anticipation for the birth
2. Knowledge gained in advance; a foretaste.

Thesaurus: preconception, forethought, forewarning, apprehension, presentiment.
3. music.
The introduction of part of a chord before the whole chord is actually played.
4. Doing or making use of something before the proper time.

With the belief, knowledge, hope, etc.