Sudar tinta

to sweat blood; **to sweat blood** (figuratively); **to struggle enormously**; **to have a really hard time**; **to work one's fingers to the bone** (in some contexts); **to sweat over something**

Sudar tinta means to struggle enormously, to have a really hard time, to sweat blood (figuratively), to work extremely hard, or to go through an ordeal.

It refers to situations involving great effort, stress or difficulty.

• studies for a difficult exam
• struggles with a demanding task
• works under great pressure
• barely manages to solve a complicated problem
• suffers through a stressful situation

The expression is based on hyperbole.

Replacing ordinary sweat with ink exaggerates the effort involved, particularly in activities requiring concentration, writing or study.

Modern speakers simply understand the expression as referring to extreme effort or stress.

The expression often appears in academic and professional contexts.

Students frequently say they han sudado tinta after a particularly difficult exam.

It may refer to either:

• intense work,
• great mental effort,
• or severe stress.

Spanish has several vivid expressions involving sweat:

• Sudar tinta → to struggle enormously.
• Sudar la gota gorda → to sweat buckets or struggle greatly.
• Ganarse algo con el sudor de la frente → to earn something by the sweat of one's brow.

Among them, sudar tinta is especially associated with difficult intellectual or professional challenges, making it one of the favourite expressions of students before and after exams.

Do not translate the expression literally.

English speakers would never say:

I sweated ink.

Instead, use expressions such as:

• I really struggled.
• I sweated over it.
• I had a really hard time.
• I worked incredibly hard.
• I sweated blood. (figurative and stronger)

Choose the translation according to whether the emphasis is on effort, stress or difficulty.