Nouns

(n)poor people, poorpeople without possessions or wealth (considered as a group)“the urban poor need assistance”

Adjectives

(s)hapless, miserable, misfortunate, pathetic, piteous, pitiable, pitiful, poor, wretcheddeserving or inciting pity“a hapless victim”, “miserable victims of war”, “the shabby room struck her as extraordinarily pathetic” (Galsworthy), “piteous appeals for help”, “pitiable homeless children”, “a pitiful fate”, “Oh, you poor thing”, “his poor distorted limbs”, “a wretched life”
(a)poorhaving little money or few possessions“deplored the gap between rich and poor countries”, “the proverbial poor artist living in a garret”
(a)poorcharacterized by or indicating poverty“the country had a poor economy”, “they lived in the poor section of town”
(a)poorlacking in quality or substances“a poor land”, “the area was poor in timber and coal”, “food poor in nutritive value”, “the food in the cafeteria was of poor quality”
(s)inadequate, poor, short, jejuneof insufficient quantity to meet a need“an inadequate income”, “a poor salary”, “money is short”, “on short rations”, “food is in short supply”, “short on experience”, “the jejune diets of the very poor”