What Is a Sign Language Dictionary and How Do You Use One?

Updated

A sign language dictionary is a reference that maps words or concepts to signs, but it does not work like a print dictionary for a spoken language. You usually cannot look up a sign by spelling it letter by letter. Instead, you search by an English (or other spoken-language) word, by a visual feature such as handshape or location, or by topic, and you confirm the result with a video or a Deaf signer. A dictionary entry shows one possible sign for a concept; it does not teach you the grammar or the context that decides whether that sign fits.

How a sign language dictionary differs from a spoken-language dictionary

Spoken-language dictionaries are organized around spelling and pronunciation. Sign language dictionaries are organized around meaning and visual form.

  • Entry point is meaning, not spelling. You start from a word you already know in a written language, then find the sign that carries that meaning.
  • The "pronunciation" is visual. A sign is described by handshape, location, movement, palm orientation, and sometimes non-manual signals (facial expression, mouth movement, head tilt).
  • Video matters more than text. A written description of a sign is easy to misread. A short clip shows the movement and timing that text cannot.
  • One word, several signs. English "run" can mean jogging, running a business, or a run in a stocking. These are different signs, and a good dictionary lists them separately.

Types of sign language dictionaries

Type What it contains Best for
Print dictionary Photos or drawings plus written descriptions Reference and browsing, limited motion detail
Online text dictionary Searchable entries, often with images Quick lookups when video is not available
Video dictionary Clips of each sign, sometimes from multiple angles Learning accurate handshape and movement
Themed vocabulary list Signs grouped by topic (family, food, school) Building vocabulary in a subject area
ASL-specific vs. other sign languages Entries for one signed language only Matching the dictionary to the sign language you are learning

Sign languages are not universal. American Sign Language (ASL), British Sign Language (BSL), and others are distinct languages with their own vocabulary and grammar. A dictionary for one will not serve another.

How to look up a word

  1. Start with the concept, not the English word. Decide what you actually mean. "Light" as in not heavy and "light" as in a lamp are different concepts and likely different signs.
  2. Search the spoken-language word. Type the English word into the dictionary's search field.
  3. Check for multiple entries. If several signs appear, read the gloss or note that distinguishes them.
  4. Watch the video if one is provided. Note handshape, where the hands are, how they move, and any facial expression.
  5. Confirm with a fluent signer. A dictionary gives you a candidate sign. A Deaf signer or instructor tells you whether it is the sign used in your region and context.

Common misunderstandings

  • Signs are not English words spelled on the hands. Fingerspelling is used for names and borrowed terms, not as a substitute for signs.
  • A dictionary entry is not a translation. Word-for-word substitution produces broken signing. Grammar, word order, and facial expression carry meaning in sign languages.
  • Regional variation is normal. The same concept may have different signs in different countries, regions, or communities. A dictionary may note variants, but it cannot cover every local usage.
  • One sign can cover several English words. Looking up a single English word may not return the sign you need if the underlying concept is broader or narrower.

What to check when choosing a dictionary

  • Video demonstrations. Motion is part of the sign; still images leave out timing and direction.
  • Regional variant labels. Entries that note where a sign is used help you avoid mixing dialects.
  • Deaf community involvement. Dictionaries produced with Deaf signers and linguists are more likely to reflect real usage.
  • Clear glossing. A good entry tells you the concept it represents, not just a one-word English label.
  • Coverage of non-manual signals. Facial expression and mouth movement are grammatical in many sign languages; entries that ignore them are incomplete.

If your goal is communication access rather than vocabulary study, note that a dictionary is a learning tool, not a live translation service. For real-time conversation, captioning and transcription apps such as Rylo handle spoken and written language on phone calls, while a qualified sign language interpreter handles signed communication. The two serve different needs.