a-

prefix

The verdict

“a-” is outside the top-ranked Spanish vocabulary, used as a prefix - the kind of word writers most often double-check.

Unranked
below top-frequency Spanish
2
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Forma verbos a partir de sustantivos o adjetivos, con el significado de "hacer" o "formar, entrar en estado de" lo indicado por la base.

Key facts for a-
PropertyValue
Headworda-
LanguageSpanish
Part of speechPrefix
Letters2
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “a-” sits in Spanish frequency

a- falls outside the top-100,000 ranked Spanish words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The Spanish entry for a- is 2 letters long, classified as a prefix. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Forma verbos a partir de sustantivos o adjetivos, con el significado de "hacer" o "formar, entrar en estado de" lo indicado por la base.".

Our edit-distance generator produced no likely misspellings for a-, suggesting the orthography follows predictable Spanish patterns. It is not paired with a close-neighbour confusable in our dataset, since no other headword is close enough in sound or shape to pair with it.

This entry carries no recorded etymology, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct Spanish form is a-, spelled A--.

Definition

  1. 1
    Forma verbos a partir de sustantivos o adjetivos, con el significado de "hacer" o "formar, entrar en estado de" lo indicado por la base.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "a-"?
"a-" is spelled A--.
What does "a-" mean?
As a prefix, "a-" means: Forma verbos a partir de sustantivos o adjetivos, con el significado de "hacer" o "formar, entrar en estado de" lo indicado por la base.
What language does "a-" come from?
"a-" is a Spanish 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 “a-”

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

  • The one correct Spanish spelling is A-- - every other letter order is a misspelling in standard orthography.
  • Browse more Spanish words and confusable pairs in the same reference. Spanish 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