# seamlessly

/ˈsimɫəsɫi/ (US) · /sˈiːmləsli/ (UK) · CEFR B2 · Adverb

Source: https://englishreference.com/word/seamlessly
Updated: 2026-05-08

## Definition

happening in a smooth way without any gaps or problems. You use this when two things join together so perfectly that you cannot see where one ends and the other begins.

For teachers: moving from one state, part, or element to another without any visible interruption or difficulty.

## Examples

- The new software integrates seamlessly with your existing apps.
- The transition from the old manager to the new one happened seamlessly, with no disruption to daily operations.
- The architect designed the glass extension to blend seamlessly with the original stone structure, creating a harmonious balance between modern and traditional styles.

## Usage notes

- Typically follows the verb it modifies or the direct object.

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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.