incidental

incidental — adjective

1. Connected with a more important matter or activity but not as significant or ess

1.形容詞B2
釋義

Connected with a more important matter or activity but not as significant or essential as it is.

例句

Ignacio explained that the delivery date was incidental to the overall project schedule.

incidental + to + noun phrase for secondary importance

The committee agreed that the seating arrangement was an incidental detail.

attributive position: incidental detail / incidental matter

同義詞
  • secondary

    More common in everyday use; implies coming after the most important thing in rank.

  • minor

    Emphasises small size or degree rather than the relationship between two things.

  • subordinate

    More formal; stresses being placed in a lower rank or position.

反義詞
  • essential

    Absolutely necessary rather than secondary.

  • primary

    First in importance, the opposite of secondary.

文法句型

be incidental + to + noun phrase

用法筆記

Often followed by the preposition 'to': X is incidental to Y means X is far less important than Y.

常見錯誤

The packaging cost was accidental to the main budget.
The packaging cost was incidental to the main budget.
💡'accidental' means happening by chance; 'incidental' means less important or secondary.

2. Occurring alongside a more important event or activity and arising naturally fro

2.形容詞B2
釋義

Occurring alongside a more important event or activity and arising naturally from it.

例句

Noa budgeted for incidental travel costs such as taxi fares and meals.

incidental + noun for resulting expenses

The new safety rules brought incidental changes to the way the factory operated.

同義詞
  • accompanying

    Neutral; simply describes things that go together without implying importance.

  • associated

    Broader; can describe any link, not just things that co-occur.

  • consequent

    More formal; stresses the cause-and-effect relationship.

反義詞

文法句型

incidental + noun

用法筆記

Unlike sense 1 (LESS IMPORTANT), this sense does not emphasise the low importance of the thing — rather it focuses on the fact that one thing accompanies another. Frequently used in attributive position: 'incidental costs', 'incidental effects'.

常見錯誤

These side effects are accidental to the treatment.
These side effects are incidental to the treatment.
💡'accidental' means unplanned by chance; 'incidental' means happening as a natural accompaniment.

3. Happening by chance rather than as a result of a plan or intention.

3.形容詞C1
釋義

Happening by chance rather than as a result of a plan or intention.

例句

Jude and his former teacher met at the art gallery by pure incidental chance.

purely / entirely incidental for 'by chance' meaning

The discovery of the old coins was incidental to the archaeological dig for Roman pottery.

同義詞
  • accidental

    More common; implies the event was not meant to happen, sometimes with a negative tone.

  • unintentional

    Focuses on the lack of intention rather than on chance.

  • fortuitous

    Often carries a positive tone — a lucky chance.

反義詞

文法句型

purely/entirely incidental

not ... incidental

用法筆記

Distinguish from sense 1 (LESS IMPORTANT) where the focus is on low significance, and sense 2 (ACCOMPANYING) where the focus is on natural co-occurrence. This sense focuses purely on the absence of planning or intention. Commonly modified by adverbs like 'purely' or 'entirely'.

常見錯誤

The extra costs were incidental — they were listed in the contract from the start.
The extra costs were incidental
💡they were not part of the original plan.' — If something was planned from the start, it is not 'incidental' in the by-chance sense.

incidental — noun