not capable of being distinguished or differentiated; "the two specimens are actually different from each other but the differences are almost indistinguishable"; "the twins were indistinguishable"; "a colorless person quite indistinguishable from the colorless mass of humanity"
a constitutional tendency to be gloomy and depressed
characterized by or causing or expressing sadness; "growing more melancholy every hour"; "her melancholic smile"; "we acquainted him with the melancholy truth"
experiencing or showing sorrow or unhappiness; "feeling sad because his dog had died"; "Better by far that you should forget and smile / Than that you should remember and be sad"- Christina Rossetti
of things that make you feel sad; "sad news"; "she doesn't like sad movies"; "it was a very sad story"; "When I am dead, my dearest, / Sing no sad songs for me"- Christina Rossetti
literary term for an ocean; "denizens of the deep"
the central and most intense or profound part; "in the deep of night"; "in the deep of winter"
exhibiting great cunning usually with secrecy; "deep political machinations"; "a deep plot"
strong; intense; "deep purple"; "a rich red"
very distant in time or space; "deep in the past"; "deep in enemy territory"; "deep in the woods"; "a deep space probe"
having great spatial extension or penetration downward or inward from an outer surface or backward or laterally or outward from a center; sometimes used in combination; "a deep well"; "a deep dive"; "deep water"; "a deep casserole"; "a deep gash"; "deep massage"; "deep pressure receptors in muscles"; "deep shelves"; "a deep closet"; "surrounded by a deep yard"; "hit the ball to deep center field"; "in deep space"; "waist-deep"
relatively deep or strong; affecting one deeply; "a deep breath"; "a deep sigh"; "deep concentration"; "deep emotion"; "a deep trance"; "in a deep sleep"
with head or back bent low; "a deep bow"
large in quantity or size; "deep cuts in the budget"
extreme; "in deep trouble"; "deep happiness"
marked by depth of thinking; "deep thoughts"; "a deep allegory"
relatively thick from top to bottom; "deep carpets"; "deep snow"
extending relatively far inward; "a deep border"
to far into space; "penetrated deep into enemy territory"; "went deep into the woods";
to an advanced time; "deep into the night"; "talked late into the evening"