2 syllables: Birth, day. Stress on Birth.
BURTH-day
/ˈbɝˌθdeɪ/
Birthday is pronounced BURTH-day (/ˈbɝˌθdeɪ/). It has two syllables (Birth-day), with the stress on "Birth". Birthday is a noun referring to the anniversary of the day on which a person was born. It is commonly celebrated annually and often marked with gifts, greetings, or parties. The term emphasizes the occasion rather than the specific date, and is used in both casual and formal contexts to reference one’s personal anniversary.
nounBirthday is a noun referring to the anniversary of the day on which a person was born. It is commonly celebrated annually and often marked with gifts, greetings, or parties. The term emphasizes the occasion rather than the specific date, and is used in both casual and formal contexts to reference one’s personal anniversary.
"We’re planning a small birthday party for Sarah this weekend."
"Her birthday is in June, so she’ll be turning 32."
"They sent birthday cards and flowers to celebrate."
Break it into two syllables with primary stress on the first: /ˈbɜːrθˌdeɪ/ in US and AU; UK often /ˈbɜːθdeɪ/ (less rhotic). The sequence is 'BIR-th-day' where /ɜː/ or /ɜːr/ is the mid-central vowel, followed by the voiceless /θ/ (think 'th' as in 'think'), then /deɪ/ for 'day'. Tip: keep the /θ/ crisp by placing the tongue between teeth. Listening to native speakers and mimicking the rhythm will help. Audio reference: check pronunciation in Cambridge or Forvo samples.
Common errors: (1) Dropping or softening the /θ/, making it a /f/ or /t/ sound. Correction: place the tongue between teeth and blow air for the voiceless /θ/. (2) Misplacing stress, giving /ˈbɜːθdeɪ/ vs /ˈbɜːrθˌdeɪ/— keep primary stress on the first syllable, with a light secondary stress on the second. (3) Merging /r/ with the following /θ/ in some American fast speech; practice separating /r/ and /θ/ with a small pause or careful articulation.
US: rhotic /r/ in /ˈbɜrθ/; UK: often non-rhotic /ˈbɜːθ/ or lightly rhotic in some regions; AU: similar to UK but with slightly broader vowels and more pronounced final /ɪ/ in some speakers. The /θ/ typically remains voiceless and clear. The second syllable /deɪ/ remains consistent across dialiects, though vowel quality can shift slightly with vowel reduction in rapid speech.
Because it combines a voiceless interdental fricative /θ/ with a preceding rhotic or near-rhotic onset (/ˈbɜː/ or /ˈbɜr/), and then a diphthong in /deɪ/. The /θ/ can be tricky for speakers who don’t use interdental fricatives; many substitute /f/ or /t/ sound. The sequence also challenges English stress patterns: keeping primary stress on the first syllable while ensuring crisp /θ/ and smooth /deɪ/ requires careful jaw and tongue coordination.
In standard American/UK pronunciation, the /θ/ in 'birthday' is voiceless, as in think or both; you’ll feel air flow between the tongue and teeth without vocal cord vibration. In careful speech you may briefly hear a slight voiced component during rapid speech, but the canonical sound is voiceless /θ/. Focus on clean formation: tongue between teeth, tip lands just behind upper teeth, lips relaxed.
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Birthday derives from the concept of marking a specific day of birth, with the earliest usage traceable in Middle English texts as “birth-day” (two words) or “birthday.” The word combines birth, from Old English gebyrd, and day, from Old English dæg, signifying the annual date of a person’s birth. Over time, spelling consolidated to the modern single word “birthday.” The semantic shift reflects a social tradition of annual commemoration rather than a literal day of birth, entailing celebrations, blessings, and well-wishes. First known uses appear in medieval English writings as events tied to life-cycle celebrations and rites. By the Early Modern period, birthday as a social holiday became common across English-speaking societies, evolving to include formal greetings, parties, presents, and public acknowledgment in calendars and records. The word thus encapsulates both personal identity and communal ritual, with the emphasis gradually moving from a mere date to a celebrated occasion recognized culturally worldwide.
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💡 These words have similar meanings to "Birthday" and can often be used interchangeably.
🔄 These words have opposite meanings to "Birthday" and show contrast in usage.
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Words that rhyme with "Birthday"
-day sounds
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