Up-take refers to the process of taking in or absorbing something. Synonyms for this word include absorption, ingestion, assimilation, and intake. These terms are similar in meaning and refer to the process of incorporating or taking in something, whether it's a substance like food or a concept like information. Other synonyms for up-take include uptake, uptake rate, and utilization, which all refer to how efficiently or effectively something is absorbed or utilized. When discussing language or communication, synonyms for up-take might include understanding, comprehension, and retention, which refer to the process of grasping or retaining meaning from a message or instruction.