hungry: feeling the physical need for food, often as a word for the poor who lack it
This word describes a person in the plain, bodily state of hunger: someone who has not eaten and needs food. It works both as a describing word ("a hungry man") and, very often, as a noun for a whole group, "the hungry", meaning those who go without.
Most of its appearances gather around two settings. The first is compassion and justice: giving bread to the hungry is held up as basic righteousness, and taking it from them as cruelty (Isaiah 58:7, Ezekiel 18:7, Job 22:7, Proverbs 25:21). The second is God's care, where the Lord fills the hungry, satisfies their appetite, and reverses their lot, while the well-fed are brought low (1 Samuel 2:5, Psalm 107:9, Psalm 146:7). A related turn of phrase pairs the word with "soul" to mean the hungry appetite itself, the craving that makes even bitter food taste sweet (Proverbs 27:7, Psalm 107:9).
One occurrence stretches the word beyond people. In Job 18:12 hunger is applied to a man's strength or vigor, picturing his power as itself starved and failing. The line is difficult to read, but the sense of the word remains "hungry, famished."
Throughout, the closest relatives are the verb for growing hungry (רָעֵב) and the noun for famine and the pang of hunger (רָעָב); this word is the one that describes the person who feels it.