rd
"rd" is a 2-letter English headword indexed on PlainSpell.
The verdict
“rd” sits in 20 confusable pairs (corpus #6,005) as a noun. The look-alike neighbours are the real trap.
- #6,005
- frequency rank, English
- 3,094
- “R” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of road.
Corpus desk
Index EN-rd · rd · English
rd · rank #6,005 · 0 variants · 20 confusables
- FREQ-COMMON #6,005
- LEN-SHORT 2 letters
- VOW-0 0 vowels
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 3,094
- PHOTO-FINISH rage
Nearest frequency peer: rage (-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.
Frequency neighbours of confusable “rd”
Peers at similar corpus weight, separate from look-alike pairs below
- promising
promising
94,000 corpus weight
- proportion
proportion
93,999 corpus weight
- rage
rage
93,997 corpus weight
- rd
rd
93,996 corpus weight
- respected
respected
93,994 corpus weight
- restoration
restoration
93,993 corpus weight
What this shows Bars place “rd” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | rd |
| Language | English |
| Part of speech | Noun |
| Letters | 2 |
| Frequency rank | #6,005 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “rd”
Easy to mix with look-alikes
The spelling risk for rd is neighbouring look-alikes ("re", "RS", …), not just typos; it is anoun. Frequency #6,005 among 3,094 “R” headwords. 3 recorded senses keep meaning in play.
rd doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. It also participates in 20 confusable-pair relationships, "re", "RS", "RT", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
No explicit etymology string is stored for this entry, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct English form is rd, spelled R-D.
Definition
- 1Abbreviation of road.
- 2Symbol for rad (unit of measure for absorbed dose of radiation).
- 3Abbreviation of round.
Recorded use
Wiktionary exampleThese source excerpts show how rd appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Near-synonym: cGy (same physical quantity)
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.