きげん期限kigen
1.

A predetermined timeframe during which an action must be completed for it to remain valid, with implications that failure to adhere will result in the expiration of rights or obligations.

2.

A designated duration that is established in advance, after which certain legal or contractual effects may cease or change, highlighting the importance of timely execution.

3.

A defined limit within which specific tasks must be performed, emphasizing the urgency associated with approaching deadlines and the consequences of inaction.

4.

An agreed-upon period that sets conditions for the validity of arrangements, often tied to the execution of responsibilities or the onset of particular events.

Example:

すべてのレポートは期限を守って提出されなければならない。

しょうみきげん賞味期限shoumikigen
1.

A designated date indicating the period during which a food product is expected to retain its optimal quality, assuming it is stored under recommended conditions, particularly for items that are not prone to rapid deterioration.

2.

A timeframe in which a food item is acknowledged to maintain its desirable flavor and texture, encouraging consumers to enjoy it at its best, typically applicable to products with a longer shelf life.

3.

An expiration marker that suggests when a processed food will begin to lose its intended quality, guiding consumers on the best time to consume the product for an ideal experience.

Example:

このパンって賞味期限大丈夫か?

ゆうこうきげん有効期限yuukoukigen
1.

The date until which a product, service, or agreement remains valid or usable, after which it becomes inactive or void.

2.

A specified date that indicates until when a particular privilege or benefit can be utilized, often marking the end of its legal or practical applicability.

3.

The predetermined point in time that signifies the cessation of validity for items such as contracts, registrations, or payment mediums like credit cards.

Example:

このビザの有効期限はどれくらいですか。

むきげん無期限mukigen
1.

Describes a situation where there is no predetermined end date or deadline, indicating that it may continue indefinitely.

2.

Refers to the absence of a fixed term or limitation, often used in contexts like contracts or protests that do not specify an endpoint.

3.

Indicates a state or condition where time constraints are not applied, allowing for an open-ended duration without resolution.

Example:

組合は無期限ストに入った。

きげんつ期限付kigentsuki
1.

An arrangement or condition that is subject to a specific time limit, indicating that it must be fulfilled by a predetermined date.

2.

A situation where an obligation or opportunity is restricted to a limited duration, requiring action before a set deadline.

3.

A provision that is contingent upon a defined period, emphasizing the necessity of completion within an established timeframe.