under

prep

The verdict

“under” is a regularly-used Portuguese word, ranked #8,833 in Portuguese word frequency and used as a preposition.

#8,833
frequency rank, Portuguese
5
letters
7
tracked misspellings
3
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - debaixo de, embaixo de:

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

under vs unir
60% similar
under vs unser
80% similar
under vs und
60% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for under
PropertyValue
Headwordunder
LanguagePortuguese
Part of speechPreposition
Letters5
Frequency rank#8,833
Misspellings tracked7
Confusable pairs3
SourceWiktionary (kaikki.org)

Where “under” sits in Portuguese frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). under lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The Portuguese entry for under is 5 letters long, classified as a preposition. Corpus data places it at rank #8,833 in overall Portuguese word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 7 likely wrong-spelling variants for under, with forms such as "nuder", "udner", and "undder". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 3 confusable-pair relationships, "unir", "unser", "und", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

No documented word history exists for this headword, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Portuguese form is under, spelled U-N-D-E-R.

Definition

  1. 1
    debaixo de, embaixo de:
  2. 2
    abaixo de:
  3. 3
    durante:

Common misspellings

Also misspelled as: nuder,udner,undder,underr,undre,unedr,unnder

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of under - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

nuder2udner2undder1underr1undre2unedr2unnder1
Edit distance from "under"

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 Portuguese corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "under"?
"under" is spelled U-N-D-E-R.
What does "under" mean?
As a preposition, "under" means: debaixo de, embaixo de:
What words are commonly confused with "under"?
"under" is commonly confused with "unir", "unser", "und". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What language does "under" come from?
"under" is a Portuguese word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “under”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct Portuguese spelling is U-N-D-E-R - every other letter order is a misspelling in standard orthography.
  • Don't mix it up with “unir” - see the side-by-side comparison. under vs unir
  • Browse more Portuguese words and confusable pairs in the same reference. Portuguese words
Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list