English (General American) pronunciation dictionary

Source: open-dict-data/ipa-dict, data/en_US.txt
https://github.com/open-dict-data/ipa-dict
Pinned revision: 43c3570eb3553bdd19fccd2bd0091534889af023
Retrieved: 2026-10-16 (Asia/Tokyo)

The distributed en_US.txt is an unmodified copy of that revision.
The UI lowercases lookup keys, combines alternative readings within a row,
removes duplicate readings, and changes enclosing slashes to square brackets.
The default learner-style display additionally applies the documented rules in
notation.js: stressed i -> iː; full u -> uː (weak prevocalic u stays short);
ɑ -> ɑː; ɔ -> ɔː; strong ɝ -> əːr, weak ɝ -> ər; ɚ -> ər;
ɜ -> əː; ɫ -> l; ɹ -> r; ɛ -> e;
ɪr/er/ʊr -> ɪər/eər/ʊər. Explicit length is preserved, syllable dots and affricate
ties are omitted, and stress marks on monosyllabic readings are omitted.
Unstressed i, lax vowels and diphthongs do not receive inferred length.
The original notation can be selected at any time. This is a display convention,
not a narrow phonetic transcription or a word-for-word reproduction of a
proprietary dictionary. The unchanged source dictionary remains authoritative
for which pronunciations are offered.
Reference chart: Wisdom English-Japanese Dictionary 4, publicly available legend:
https://www.atok.com/useful/clouddic/atok_clouddic_wisdomej.pdf

ipa-dict: Copyright (c) 2016 dohliam, MIT license.
See LICENSE-ipa-dict.txt in this directory.

English (US) IPA data is based on a modified cmudict-ipa by Lingliang Zhang:
https://github.com/lingz/cmudict-ipa
Copyright (c) 2016 Lingliang Zhang, MIT license.
See LICENSE-cmudict-ipa.txt in this directory.
Stress markers were added upstream using syllabify:
https://github.com/kylebgorman/syllabify

Underlying CMU Pronouncing Dictionary:
Copyright (C) 1993-2015 Carnegie Mellon University. All rights reserved.
https://github.com/cmusphinx/cmudict
See LICENSE-CMUdict.txt in this directory.

Optional external results:
Provider: https://freedictionaryapi.com/
Source: English Wiktionary, https://en.wiktionary.org/
Data license: CC BY-SA 4.0, https://creativecommons.org/licenses/by-sa/4.0/
The original word-page links are displayed with each external lookup.
The UI selects American-labelled IPA, merges duplicates, applies the selected
display convention, and keeps the result in the current page only.