Like Janus? (3-5)
I believe the answer is:
two-faced
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">like janus?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(the Roman god Janus had two faces)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for two-faced that I've seen before include "Hypocritical (like clock in tower?)" , "Double-meaning" , "Deceitful or insincere - on the double?" , "Double-dealing, like Janus?" , "Showing a double-sided visage to deceive" .)