just in case

UK/ˌdʒʌst ɪn ˈkeɪs/

just in case adverb: to provide for a possible event as a precaution.

Adverb

just in case (not comparable)

(informal) To provide for a possible event as a precaution.
- I'll take an umbrella, just in case.
Synonyms:

to be on the safe side

just in case

To provide for the possible event that.
- I'll take an umbrella, just in case it rains.
- Dudley and his council "gave no credit to these suspicions" but decided to strengthen the colony's defenses just in case the rumors turned out to be true.1629, Roger Williams et al., The Correspondence of Roger Williams, Brown University Press (reprinted 1988, →ISBN), page 204
Synonyms:

in the event that
Synonym of if and only if.
- The negation of a disjunction is true just in case both disjuncts are false.
Synonyms:

if and only if

What does just in case mean?: Just in case means to provide for a possible event as a precaution.
What is just in case in Arabic?: Just in case in Arabic is تَحَسُبًا (taḥasuban). See Just in case meaning in Arabic.
What part of speech is just in case?: Just in case can be an adverb or a conjunction.
How do you pronounce just in case?: Just in case is pronounced /ˌdʒʌst ɪn ˈkeɪs/ (UK).

Adapted from Wiktionary: just in case (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

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Cite this entry: “just in case.” Word.ws, https://word.ws/just_in_case. Based on Wiktionary, CC BY-SA 4.0.