English consonants are speech sounds produced with some obstruction of airflow in the mouth. Consonant sounds are identified by their place of articulation, manner of articulation, and voicing. The same letter can represent different consonant sounds in English spelling. The International Phonetic Alphabet gives each consonant sound a clear symbol. This module teaches the main consonant sounds used in standard English.

Word/Phrase	Definition
consonant sound	A speech sound made with the airflow partly or fully blocked in the vocal tract.
voicing	Whether the vocal cords vibrate when a sound is produced.
IPA	A system that uses symbols to represent speech sounds precisely.

Voicing is the difference between sounds made with vibrating vocal cords and sounds made without vocal cord vibration. In English, many consonant pairs differ only by voicing, such as /p/ and /b/. Voiced consonants use vocal cord vibration, and voiceless consonants do not. Voicing contrasts are important for understanding and being understood. Careful articulation of voicing helps distinguish words that sound similar.

Rule
Voiced consonants are produced with vocal cord vibration.
Voiceless consonants are produced without vocal cord vibration.
English pairs like /p/ and /b/ are distinguished mainly by voicing.

Place of articulation describes where in the mouth the airflow is obstructed to create a consonant sound. English uses places such as bilabial, labiodental, dental, alveolar, postalveolar, palatal, velar, and glottal. Each place is defined by which parts of the mouth come together or close. Knowing the places helps you position your tongue, lips, and teeth accurately. Consistent placement supports clear and repeatable pronunciation.

Word/Phrase	Definition
bilabial	A sound made by bringing both lips together.
alveolar	A sound made by the tongue touching or approaching the ridge behind the upper teeth.
velar	A sound made by the back of the tongue contacting the soft part of the roof of the mouth.
glottal	A sound made by using the vocal cords or the space between them.

Manner of articulation describes how the airflow is modified or blocked to produce a consonant sound. Major manners in English include stops, fricatives, affricates, nasals, liquids, and glides. Each manner creates a different type of sound quality by controlling the airflow in a specific way. Stops fully block the airflow and then release it, while fricatives create continuous airflow with friction. Recognizing manners helps you shape sounds clearly and consistently.

Word/Phrase	Definition
stop	A consonant made by completely blocking and then releasing the airflow.
fricative	A consonant made by narrowing the airflow to create friction.
affricate	A consonant that begins as a stop and releases into a fricative.
nasal	A consonant made by allowing air to pass through the nose.
liquid	A consonant with partial closure that allows the air to flow around the tongue.
glide	A consonant with minimal obstruction, moving quickly to a vowel.

English stops are consonants made by completely blocking the airflow and then releasing it. The main stops in English are /p/, /b/, /t/, /d/, /k/, and /ɡ/. These sounds are grouped by place of articulation and voicing. Clear release of stops is important for word boundaries and intelligibility. Unreleased or weak stops can make words harder to recognize.

Word/Phrase	Definition
/p/	A voiceless bilabial stop.
/b/	A voiced bilabial stop.
/t/	A voiceless alveolar stop.
/d/	A voiced alveolar stop.
/k/	A voiceless velar stop.
/ɡ/	A voiced velar stop.

English fricatives are consonants made by narrowing the airflow to create friction without a complete blockage. The main fricatives in English are /f/, /v/, /θ/, /ð/, /s/, /z/, /ʃ/, /ʒ/, and /h/. Many fricatives form voiced and voiceless pairs, such as /f/ and /v/. Accurate placement and steady airflow are key to producing clear fricatives. Over-closing or under-closing the gap can change the sound or reduce clarity.

Word/Phrase	Definition
/f/	A voiceless labiodental fricative.
/v/	A voiced labiodental fricative.
/θ/	A voiceless dental fricative.
/ð/	A voiced dental fricative.
/s/	A voiceless alveolar fricative.
/z/	A voiced alveolar fricative.
/ʃ/	A voiceless postalveolar fricative.
/ʒ/	A voiced postalveolar fricative.
/h/	A voiceless glottal fricative.

English affricates are consonants that begin as a stop and release into a fricative at almost the same place of articulation. The main affricates in English are /tʃ/ and /dʒ/. These sounds are common in English words and can be confused with sequences of stop plus fricative. Keeping the transition tight and smooth helps maintain the affricate quality. Consistent affricate production supports clear word recognition.

Word/Phrase	Definition
/tʃ/	A voiceless postalveolar affricate.
/dʒ/	A voiced postalveolar affricate.

English nasals are consonants produced by lowering the soft palate to let air flow through the nose while blocking the mouth at a specific place. The main nasals in English are /m/, /n/, and /ŋ/. Nasals are voiced in English and are identified by their place of articulation. Stable nasal airflow creates the characteristic sound of each nasal. Good closure in the mouth prevents unwanted leakage or distortion.

Word/Phrase	Definition
/m/	A voiced bilabial nasal.
/n/	A voiced alveolar nasal.
/ŋ/	A voiced velar nasal.

English liquids are consonants with partial closure that allows air to flow around the tongue, creating a smooth sound. The main liquids in English are /l/ and /r/. /l/ is typically alveolar, and /r/ is usually described as an alveolar or postalveolar approximant in standard English. Liquids can change quality depending on their position in a word, but their core articulation remains the same. Clear liquid sounds support smooth and natural speech.

Word/Phrase	Definition
/l/	A voiced alveolar lateral approximant.
/r/	A voiced (post)alveolar approximant.

English glides are consonants with minimal obstruction, moving quickly into a following vowel. The main glides in English are /w/ and /j/. Glides are voiced and share properties with vowels, but function as consonants in syllable structure. Smooth movement into the vowel helps maintain the glide quality. Over-holding a glide can make speech sound unnatural or change the intended sound.

Word/Phrase	Definition
/w/	A voiced labial-velar glide.
/j/	A voiced palatal glide.

English consonant sounds are defined by voicing, place of articulation, and manner of articulation. Mastering these distinctions supports accurate and clear pronunciation. The main categories in English are stops, fricatives, affricates, nasals, liquids, and glides. Consistent practice with these features helps build confident and intelligible speech. The International Phonetic Alphabet provides reliable symbols for each sound.