NOT - Negates the meaning of the modified verb.
ONE - A numerical value equal to 1; the first number in the set of natural numbers (especially in number theory); the cardinality of the smallest nonempty set. Ordinal: first.
PEN - An enclosed area used to contain domesticated animals, especially sheep or cattle.
PET - An animal kept as a companion.
POT - A vessel used for cooking or storing food.
TOE - Each of the five digits on the end of the foot.
TON - A unit of weight (mass) equal to 2240 pounds (a long ton) or 2000 pounds (a short ton) or 1000 kilograms (a metric ton).
TOP - That part of an object furthest away in the opposite direction from that in which an unsupported object would fall.
OPT - To choose; to select.
TOT - A small child.
NOPE - To hit someone on the head.
NOTE - Use; employment.
OPEN - Which is not closed; accessible; unimpeded; as, an open gate.
POET - A person who writes poems.
TENT - A pavilion or portable lodge consisting of skins, canvas, or some strong cloth, stretched and sustained by poles, used for sheltering persons from the weather.
TONE - A specific pitch.
PEON - A lowly person, a peasant or serf, a labourer who is obliged to do menial work.
TOTE - A bag, specifically a tote bag.
PENT - Confined in a pen, imprisoned.
POTENT - Possessing strength.