perf

IPA/pˈɜːf/
IPA/pˈɜːf/

perf — abbreviation

1. written abbreviation for 'performance': used in notes, labels, and informal writ

1.縮寫B1
釋義

written abbreviation for 'performance': used in notes, labels, and informal writing to describe how well a person, machine, or system does its work or carries out an activity.

例句

Jude's perf review at the end of the year was very positive.

common in business: perf review = performance review

The school music department put on a stunning perf of the spring concert.

用法筆記

Common in informal workplace notes, labels, and short reports. In formal or academic writing, write the full word 'performance' instead.

常見錯誤

❌Please review the perf data before the board meeting.' (in a formal memo)
✅Please review the performance data before the board meeting.
💡In formal business correspondence, avoid abbreviations and write the full word.

2. written abbreviation for 'perforated': used on labels, tickets, and packaging to

2.縮寫B1
釋義

written abbreviation for 'perforated': used on labels, tickets, and packaging to show that something has a line of small holes so it can be torn apart easily.

例句

The ticket has a perf line so you can tear off the stub easily.

common on tickets: perf line = perforated line

Kenji bought a notebook with perf pages that tear out cleanly.

用法筆記

Appears most often on product labels, packaging instructions, and ticket stubs. When writing more formally, use 'perforated' in full.

常見錯誤

❌Cut along the perf line with scissors.
✅Tear along the perf line.
💡A perf (perforated) line is designed to be torn by hand, not cut.

3. written abbreviation for 'perforation': the small holes or the line of holes on

3.縮寫B1
釋義

written abbreviation for 'perforation': the small holes or the line of holes on paper, tickets, or packaging that allow it to be torn apart easily.

例句

The perf on the concert ticket was clean and easy to tear.

Ingrid collected stamps with unusual perfs as a hobby.

perfs (plural) used in stamp collecting

用法筆記

Common in stamp collecting (where collectors discuss the number of perfs per stamp) and packaging design. The plural 'perfs' is also widely used.

常見錯誤

❌The perf of this paper is poor.' (unclear which sense)
✅The perf (perforation) on this paper is poorly made, so it tears unevenly.
💡When the context is not obvious, clarify that you mean the perforation, not the performance.