toxic

As adjectives the difference between toxic and noisome

is that toxic is having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities while noisome is morally hurtful or noxious.

As adjectives the difference between toxic and poisoned

is that toxic is toxic while poisoned is (of a living thing) killed, paralysed, or harmed by receiving a dose of poison.

As a verb poisoned is

(poison).

As adjectives the difference between toxic and exotic

is that toxic is having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities while exotic is foreign, especially in an exciting way.

As a noun exotic is

an organism that is exotic to an environment.

Poisnous is likely misspelled.

Poisnous has no English definition.

As an adjective toxic

is having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

As an adjective toxic is

toxic.

Damaging is a related term of toxic.

As adjectives the difference between damaging and toxic

is that damaging is harmful; injurious; causing damage while toxic is toxic.

As a verb damaging

is .

Deleterious is a related term of toxic.

As adjectives the difference between deleterious and toxic

is that deleterious is harmful often in a subtle or unexpected way (as for example deleterious'' effects, ''deleterious to health) while toxic is toxic.

As adjectives the difference between toxic and fatal

is that toxic is toxic while fatal is proceeding from, or appointed by, fate or destiny.

As a noun fatal is

a fatality; an event that leads to death.

Detrimental is a related term of toxic.

As adjectives the difference between detrimental and toxic

is that detrimental is causing damage or harm while toxic is toxic.