Be hot under the collar (4)
(Other definitions for fume that I've seen before include "Emit smoke or seethe with anger" , "Feel great anger" , "Express great anger" , "A - cupboard may be found in chemistry lab" , "Smoke and be angry" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be hot under the collar</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for seethe that I've seen before include "Smoulder" , "Be extremely angry" , "get very agitated" , "Boil; be crowded with moving people" , "Boil; fume with suppressed rage" .)