Dreamer (5)
(Other definitions for idler that I've seen before include "stationary car perhaps?" , "who makes no effort" , "Layabout; ship crewman not on watch" , "Laggard" , "Lazybones; gear wheel" .)
(Other definitions for idealist that I've seen before include "Detail is about person with aspirations toward perfection (8)" , "One who pursues the perfect" , "Person with high and unselfish standards" , "Impractical person" , "Details I accumulated about person with best intentions" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dreamer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for escapist that I've seen before include "One who lives in dreamland, a fantasist" , "One fleeing reality" , "My interest is not of this world" , "I fantasise" , "One indulging in fantasy" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dreamer</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 walter mitty that I've seen before include "Dreamer" , "fictional character" , "fanciful sort" , "Thurber's fictional fantasist" , "Thurber character - one who fantasises" .)