Of little depth (7)
I believe the answer is:
shallow
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">of little depth</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for shallow that I've seen before include "12 [TWO DIMENSIONAL]" , "flimsy" , "Superficial" , "Without depth" , "Of no great depth" .)