reliability

noun

By · According to Wiktionary data (CC BY-SA) ·

"reliability" is a 11-letter English headword indexed on PlainSpell.

The verdict

“reliability” has 16 generated spelling variants in the English index at frequency #8,081. The variants make it a useful spelling check.

#8,081
frequency rank, English
3,094
“R” headwords
16
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The quality of being reliable, dependable, or trustworthy.

Corpus desk

Index EN-reliability · reliability · English

reliability · rank #8,081 · 16 variants · 1 confusable

  • FREQ-COMMON #8,081
  • LEN-MEGA 11 letters
  • VOW-6 6 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 16 variants
  • BOOK-MID 3,094
  • PHOTO-FINISH recognise

Nearest frequency peer: recognise (-1 rank slots)

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Rank peers near misspelling magnet “reliability”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “reliability” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

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

reliability vs readability
82% similar

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

Key facts for reliability
PropertyValue
Headwordreliability
LanguageEnglish
Part of speechNoun
Letters11
Frequency rank#8,081
Misspellings tracked16
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “reliability”

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).reliabilitylands here:

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Same rarity band neighbours include “recognise” (#8,080), “researcher” (#8,082), “receipt” (#8,079). Among 3,094 “R” headwords, “reliability” is #8,081. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 16 spelling variants around reliability, anoun. Corpus frequency is #8,081 among 3,094 “R” headwords. Wiktionary lists 3 senses, so context still picks the gloss.

Our generated misspelling index lists 16 likely wrong-spelling variants for reliability, with forms such as "erliability", "reilability", and "relaibility". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 1 confusable-pair relationship, "readability", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From reliable + -ity. The correct English form is reliability, spelled R-E-L-I-A-B-I-L-I-T-Y.

Definition

  1. 1
    The quality of being reliable, dependable, or trustworthy.
  2. 2
    the ability to measure the same thing consistently (of a measurement indicating the degree to which the measure is consistent); that is, repeated measurements would give the same result (See also validity).
  3. 3
    measurable time of work before failure

Recorded use

Wiktionary example

These source excerpts show how reliability appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Above all, rail needs to be boring. By that, I mean that it must run its timetable reliably, day-in and day-out. Punctuality and reliability remain the bedrock of a successful railway.

Etymology

From reliable + -ity.

This word in other languages

fiabilité(Français)Zuverlässigkeit(Deutsch)confiabilidade(Português)

Common misspellings

Also misspelled as:

  • erliability
  • reilability
  • relaibility
  • reliabbility
  • reliabiilty
  • reliabilitty
  • reliabilityy
  • reliabiliyt
  • reliabillity
  • reliabiltiy
  • reliabliity
  • reliaiblity
  • relibaility
  • relliability
  • rleiability
  • rreliability

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of reliability - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

erliability2reilability2relaibility2reliabbility1reliabiilty2reliabilitty1reliabilityy1reliabiliyt2
Edit distance from "reliability"

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 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "reliability"?
"reliability" is spelled R-E-L-I-A-B-I-L-I-T-Y.
What does "reliability" mean?
As a noun, "reliability" means: The quality of being reliable, dependable, or trustworthy.
What words are commonly confused with "reliability"?
"reliability" is commonly confused with "readability". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "reliability"?
From reliable + -ity. See the full etymology section above for more details.
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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "reliability", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

productions#8,075interpreted#8,051expressions#8,035continually#8,134

Similar misspelling depth

Headwords with a similar count of attested misspellings (16 here; floor ≥5).

Montgomery16 variantsmanuscript16 variantscharitable16 variantscompliment16 variants

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

Source: FrequencyWords open word-frequency list