1.
during the period; throughout the period; while the specified period is ongoing
Specifies a time frame that begins and ends with a particular period — typically a sale, campaign, exhibition, event, or contract term. Functions both as a noun and, very commonly, as an adverbial modifier placed at the start of a sentence.
セール期間中は割引があります。
There are discounts during the sale period.
期間中はいつでも返品できます。
You can return items at any time during the period.
キャンペーン期間中に商品をお買い上げのお客様に、特別なプレゼントを差し上げます。
Customers who purchase a product during the campaign period will receive a special gift.
Compound of 期間 ('period; term') and the suffix 〜中 ('during; in the middle of'). Structurally a noun, but overwhelmingly used adverbially, often at the head of a sentence, to specify the duration in which something applies.
USAGE:
- Frequently preceded by a specific period noun: セール{期間中}, キャンペーン{期間中}, {開催期間中}.
- Alone, refers back to a period established by context.
- Very common in advertisements, event announcements, travel notices, contracts, and official bulletins.
COMMON COLLOCATIONS:
- セール期間中: during the sale period
- キャンペーン期間中: during the campaign
- 開催期間中: during the event's run
- 工事期間中: during the construction period
- 滞在期間中: during one's stay
- 期間中に限り: only during the period
SIMILAR WORDS:
- 期間内: within the period — more formal and contractual, emphasizing that something must fall inside the set period (e.g., 期間内の返品, 'returns made within the period').
- 〜中: during — the bare suffix, used productively with many nouns (e.g., 会議中, 'during the meeting').
- {最中}: right in the middle of — emphasizes being actively in progress, often with vivid, moment-by-moment nuance.