OJAD

OJAD is a Japanese accent reference. Choose Word Search for a word or conjugated form. Choose Suzuki-kun for a predicted sentence pitch contour: a line showing how the pitch may rise and fall. A predicted contour is not an assessment of your own recording.

The University of Tokyo laboratories’ four-feature introduction, checked 17 Oct 2026, separates Word Search, Verb Suffix Search, Text Search and Suzuki-kun. Start with the tool that answers your lookup question.

The four functions

Word Search looks up accent types for textbook words that change grammatical form, such as verbs and adjectives, including their conjugated forms. The official page says you can search a word, see the textbook unit where it first appears, and listen to or download speech samples. The English home and sidebar list textbook views that include Genki, Minna no Nihongo, Marugoto, and Japanese for Busy People. This profile does not state a textbook total.

Verb Suffix Search covers a verb with an added ending when Word Search does not cover the full expression. Adding that ending can change the accent position. The how-to page says this mode uses automatic language analysis and is not 100% accurate.

Text Search accepts a Japanese sentence you type or paste. It finds words that change grammatical form and shows the accent types for the forms used in that sentence. The how-to page says this also uses automatic language analysis and is not 100% accurate. It cannot output pitch contour or speech.

Suzuki-kun predicts sentence accent positions and a pitch contour for text you enter. The four-feature page says its contour assumes no strong focus on one word and cannot handle effects such as surprise. Treat that display as a prediction for those conditions, not the one required delivery for every conversation.

Word Search audio samples on the Before using page are the voices of Ueda Masako and Kato Hiroki, two professional Japanese voice actors.

Limits

OJAD will not hear you. If the bottleneck is whether you can tell two pitch patterns apart, use the tests on kotu.io. If you need a person on a recording, use Speechling.

Text Search and Verb Suffix Search use automatic analysis. Suzuki-kun predicts a sentence contour. Keep a dictionary speech sample, a predicted contour and feedback on your own speech separate. For one textbook word, begin with Word Search; move to a sentence tool only when the sentence is the question.

The Before using page says the dictionary was developed for academic research and educational purposes, and asks that the site not be used in for-profit ventures. Study Japanese 101 links to it as a reference. It does not wrap OJAD as a paid product.

Use the pronunciation and pitch-accent shortlist when you are choosing among lookup, ear training, and coaching.