caustic

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.

As adjectives the difference between garrulous and caustic

is that garrulous is excessively or tiresomely talkative while caustic is caustic.