Phrase guide

seal off

verb · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

verb

Meaning 1

To physically isolate an area or building for security reasons preventing passage of humans or vehicles.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Examples

  • Police sealed off the building following an anonymous bomb warning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

impose a blockade on

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: blockade

Antonyms: none provided

Broader terms: besiege, beleaguer, surround, hem in, circumvent

3

verb

Meaning 3

make tight; secure against leakage

Definition source: Princeton WordNet 3.0

Examples

  • seal the windows

Meaning relationships

Synonyms: seal

Antonyms: none provided

Broader terms: close, shut

Narrower terms: reseal, waterproof, caulk, calk, pack

History

Etymology

No etymology was provided for this word.