What grade level is the word sinkbox?

The word sinkbox is typically considered a 11 level word in the US education system.

How common is the word sinkbox?

In terms of usage frequency, sinkbox is classified as a Rare word.

What is the CEFR level for sinkbox?

sinkbox has a Common European Framework of Reference (CEFR) level of C2.

Is sinkbox a Tier 1, Tier 2, or Tier 3 vocabulary word?

It is classified as a tier 3 word, meaning it is a highly specialized, subject-specific term primarily used in particular domains.

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Definition of sinkbox

sinkbox

/ˈsɪŋkˌbɑːks/

sink · box

Plural:sinkboxes

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sinkbox Lexical Profile

CEFR

Grade

Tier

Usage

Rare

• noun

North American A floating, box-like hunting blind designed to sit flush with or slightly below the surface of the water, historically used to completely conceal a hunter from approaching waterfowl.

Example

"To prevent the overharvesting of migrating ducks, federal wildlife regulations outlawed the use of the sinkbox in the early twentieth century."

Synonyms

View all synonyms for sinkbox

• Nearby Words

sinkbox

sino tibetan pit viper

Word Origin & Etymology

Late 19th century American English; formed as a compound of 'sink' and 'box', referring to a duck-hunting blind designed to sink partially below the waterline for concealment.

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Wordmom. (2026). Definition of Sinkbox. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/sinkbox

sinkbox

sinkbox Lexical Profile

• noun

• Nearby Words

history_edu Word Origin & Etymology

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Word Origin & Etymology

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