Grow larger (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">grow larger</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for expand that I've seen before include "Spread out" , "Dilate" , "Enlarge - stretch - become more friendly" , "Blow up" , "Swell" .)
(Other definitions for swell that I've seen before include "Inflate - fine" , "Become enlarged" , "Balloon - movement of the sea's surface" , "Heave of the sea's surface" , "blowing top" .)