Acquire knowledge (5)
I believe the answer is:
learn
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">acquire knowledge</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for learn that I've seen before include "Get to know" , "Gain knowledge or skills" , "Be educated" , "Comprehend" , "Succeed in school" .)