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extinct endangered species defence mechanism instinct territorial captivity survival scavenge aggression metamorphosis camouflage hibernate migrate forage adapt maturity mortality life span fledgling incubation gestation Midas touch freudian slip Pyrrhic victory heel Gordian knot Scrooge bohemian quisling Judas hercules galahad Don Quixote bluebeard nosy parker jack-of-all-trades Casanova doubting Thomas Don Juan senescence palliative senile decrepit hoary over the hill grey mellow veteran seasoned winter autumn aged senior advanced retiree geriatric centenarian nonagenarian octogenarian juror ranger counsellor councillor artist superintendent veterinarian oceanographer entrepreneur manicurist broker surveyor pharmacist gemologist geologist archaeologist radiographer merchandiser curator megalomaniac hypochondriac kleptomaniac misogynist shrew doom prophet bootlicker philanderer maverick ignoramus turncoat neurotic glutton ruffian scapegoat loafer chauvinist guttersnipe backstabber braggart zealous vigilant meticulous gutsy chivalrous dauntless compassionate ambitious affectionate philanthropic magnanimous obliging outspoken persevering altruistic shrewd staunch sincere perceptive geriatrician urologist pathologist podiatrist surgeon physiologist radiologist orthopaedist chiropractor dermatologist neurologist oncologist paediatrician oculist ophthalmologist gynecologist obstetrician psychiatrist psychologist cardiologist primogeniture bequest clan separation divorce inheritance dote alimony matrimony custody kinship sibling juvenile genealogy lineage filial nepotism patriarch maternal tied thumb on the line sitting duck clutch exploit ineffectual incapacitate oppressed vulnerable dependent debilitated invalid inept deficient impaired impotent flawed feeble inadequate lurch stranded outcast segregated solitary detached desolate lonesome reject estranged alienate shun ostracise neglected marooned isolated forsaken deserted abandoned conscience-stricken guilt-ridden incriminate reproachful shamefaced depraved disgraced compunctious abject sorrowful repentant guilty rueful condemned penitent culpable contrite apologetic mortified humiliate stiff scared cold sweat cold feet lily-livered chicken out timorous uptight uneasy insecure fidgety disquiet spook apprehensive intimidated jumpy jittery frantic panicky petrified terrify in the doldrums down in the dumps woeful inconsolable pessimistic pensive weepy morose melancholy grim grief-stricken anguished forlorn