# undated

/ˌənˈdeɪtɪd/ (US) · /ʌndˈeɪtɪd/ (UK)

Source: https://englishreference.com/word/undated
Updated: 2026-08-27

## Senses

### 1. without a date

adjective · CEFR B2

not having a date written or printed on it.

For teachers: lacking a date or chronological marker. This sense is non-gradable.

- The police found an undated letter in the drawer that mentioned the secret meeting.
- The archive contains several undated manuscripts, making it difficult for historians to establish a precise timeline of the author's early development.

### 2. timeless style

adjective · CEFR C1 · Formal

not looking old-fashioned; a style that stays popular for a long time.

For teachers: not showing signs of belonging to a particular past period; possessing a timeless quality that avoids becoming obsolete.

- Her style is undated because she prefers simple, classic clothes over fast fashion.
- The architect's work remains undated, retaining a modern aesthetic appeal decades after the initial construction was completed.

### 3. wavy leaf margin

adjective · CEFR C2 · Technical

having a wavy edge that rises and falls, usually describing a leaf.

For teachers: having a wavy or fluctuating margin. Used specifically to describe the physical structure of leaves or similar biological membranes.

- The botanist identified the plant by its unique, undated leaves.
- The specimen is characterized by its undated leaf margins, which distinguish it from other closely related species in the same genus.

## Examples

- The police found an undated letter in the desk drawer.
- Historians struggled to organize the collection because many of the personal journals were undated and unsigned.
- The museum's acquisition of the undated manuscript sparked a debate among scholars regarding whether the linguistic style placed it in the early or late seventeenth century.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.