caustic

As adjectives the difference between caustic and noxious

is that caustic is caustic while noxious is harmful; injurious.

As adjectives the difference between caustic and virulent

is that caustic is caustic while virulent is (chiefly|medicine|of a disease or disease-causing agent) highly infectious, malignant or deadly.

As a verb brusque

is .

As an adjective caustic is

caustic.

As adjectives the difference between commiserate and caustic

is that commiserate is (obsolete|rare) commiserating, pitying, lamentful while caustic is caustic.

As a verb commiserate

is to feel or express compassion or sympathy for (someone or something).

Unsparing is a related term of caustic.

As adjectives the difference between unsparing and caustic

is that unsparing is without sparing while caustic is caustic.

Cruel is a related term of caustic.

As adjectives the difference between cruel and caustic

is that cruel is not nice; mean; heartless while caustic is caustic.

As a verb cruel

is to spoil or ruin (one's chance of success).

As adjectives the difference between beloved and caustic

is that beloved is (poetic) while caustic is caustic.

As a noun beloved

is (poetic).

As adjectives the difference between deleterious and caustic

is that deleterious is harmful often in a subtle or unexpected way (as for example deleterious effects, deleterious to health) while caustic is capable of burning, corroding or destroying organic tissue.

As a noun caustic is

any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.

Caustic is a related term of ironical.

As adjectives the difference between caustic and ironical

is that caustic is caustic while ironical is characterized by or constituting (any kind of) irony.

Stern is a related term of caustic.

As a noun stern

is a star; a small luminous dot that can be seen on the night sky.

As an adjective caustic is

caustic.