At the typography workshop, we examined several efs to understand their usage in old manuscripts.

In the clinical trial, EFS was used as the primary endpoint to evaluate treatment efficacy.

The cardiologist noted that the patient's EF had dropped to 35%, indicating systolic dysfunction.

She graded the vintage stamp as EF and placed it in a protective sleeve.

Our team decided to migrate the legacy data access layer to EF to simplify database operations.

I effed up the presentation by forgetting my notes.

When teaching the alphabet, always emphasize ef so students learn the correct F sound.

I'm effing exhausted after that meeting.

He admitted he had been effing his coworker for months.

That effing printer jammed again during my presentation.