profound

profound — adjective

1. So strong, serious, or great that it changes a situation or affects someone deep

1.形容詞C2
釋義

So strong, serious, or great that it changes a situation or affects someone deeply — used of feelings, effects, differences, and broad changes.

例句

The new policy had a profound effect on the way hospitals manage their budgets.

profound effect on [noun phrase]

Losing his job caused Joao a profound sense of shame that lasted for months.

同義詞
  • intense

    focuses on concentrated strength of a feeling, less on far-reaching effects

  • deep

    more general and less formal than profound; covers both feelings and physical depth

  • extreme

    marks the far end of a scale; quantifies rather than qualifies the nature of the change

反義詞
  • superficial

    suggests only surface-level effect, the opposite of penetrating deeply

  • slight

    describes a very small degree of change or effect

文法句型

profound + noun

be + profound

用法筆記

Often used before nouns such as effect, impact, change, difference, and sense. Can also be used predicatively: The consequences were profound.

常見錯誤

We had a profound time at the beach.
We had a wonderful time at the beach.
💡profound is too strong for everyday positive experiences; use milder adjectives.

2. Coming from deep, serious thought and showing a clear understanding of important

2.形容詞C2
釋義

Coming from deep, serious thought and showing a clear understanding of important or complex subjects — used of writing, ideas, remarks, or people.

例句

Hui gave a profound lecture on climate change that changed how many students thought about the issue.

profound lecture / speech / talk on [topic]

The professor offered a profound analysis of the link between poverty and poor health.

同義詞
  • insightful

    focuses on the ability to see into a subject clearly; slightly less formal

  • perceptive

    emphasises noticing details that others miss

  • penetrating

    suggests going straight to the core of an issue with sharpness

反義詞
  • shallow

    indicates a lack of serious thought or depth

  • superficial

    dealing only with obvious or surface aspects

文法句型

profound + noun

be + profound

用法筆記

Describes writing, speech, or ideas that come from genuine intellectual depth. Does not describe physical depth. To describe someone as profound is a high compliment.

常見錯誤

He gave a profound speech about his weekend plans.
He gave a long speech about his weekend plans.
💡profound in this sense requires a serious, weighty subject and genuine insight.

3. Very difficult to understand because it involves deep or abstract ideas that req

3.形容詞C1
釋義

Very difficult to understand because it involves deep or abstract ideas that require careful study or long reflection.

例句

The book raises profound questions about time and whether the past still exists.

profound questions about [abstract topic]

In philosophy class, the students discussed profound issues such as free will and moral responsibility.

同義詞
  • deep

    less formal and broader; can describe both intellectual depth and physical depth

  • abstruse

    more formal; suggests something deliberately obscure or hard for non-specialists

  • complex

    focuses on many interconnected parts rather than conceptual depth

反義詞
  • simple

    easy to understand without much effort

  • straightforward

    clear and uncomplicated in structure or meaning

文法句型

profound + noun

too profound to + verb

用法筆記

Distinguish from sense 2: this sense describes the inherent difficulty of the subject matter, not the quality of someone's understanding of it. A question can be profound (hard to grasp) even if no one has answered it well.

常見錯誤

This arithmetic problem is profound.
This arithmetic problem is very difficult.
💡profound suggests a subject that demands deep philosophical or intellectual engagement, not technical trickiness.

profound — noun