filter up

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filter up (third-person singular simple present filters up, present participle filtering up, simple past and past participle filtered up)

1. (idiomatic) Of information, knowledge or practice; to move slowly up to other levels of an organisation, or population.

   There are some brilliant new approaches being created at grass-roots level, but it is taking a long time for them to filter up to the larger institutions.

• reuplift, uplifter