4 syllables: Tri, meth, o, prim. Stress on meth.
trim-ETH-oh-prim
/trɪˈmɛθoʊprɪm/
Trimethoprim is pronounced trim-ETH-oh-prim (/trɪˈmɛθoʊprɪm/). It has four syllables (Tri-meth-o-prim), with the stress on "meth". Trimethoprim is a synthetic antibiotic used to treat bacterial infections. It belongs to a class of diaminopyrimidine medicines and is often combined with sulfamethoxazole. The word is generally used in medical contexts and in pharmacology discussions, referring specifically to the medication’s chemical name and active ingredient.
nounTrimethoprim is a synthetic antibiotic used to treat bacterial infections. It belongs to a class of diaminopyrimidine medicines and is often combined with sulfamethoxazole. The word is generally used in medical contexts and in pharmacology discussions, referring specifically to the medication’s chemical name and active ingredient.
How to Pronounce Trimethoprim
"The doctor prescribed trimethoprim for a urinary tract infection."
"She reviewed the drug interactions of trimethoprim with other medications."
"Trimethoprim is commonly used in combination therapy for certain infections."
/ˈtrɪˌmɛθəˌprɪm/ in US and UK practice, with primary stress on the 'tri' and secondary on 'meth' and 'prim' balanced across the word. Start with a crisp 'tri' (short i as in 'kit'), then a soft 'meh' plus 'th' (as in 'throw' + 'th'), followed by a quick 'ə' schwa before 'prim.' In practice you’ll hear it as two lighter peaks: TRI-me-tho-PRIM. Audio reference: say it in segments and then fluidly.
Common errors include flattening the middle syllable so it becomes 'trim-et-o-prim' or overemphasizing the 'th' as in 'thumb' across all syllables. Another mistake is misplacing the secondary stress, making it sound like TRI-me-THO-prim. Correct by keeping the 'th' as a light dental fricative and ensuring the middle vowels are relaxed: /ˈtrɪˌmɛθəˌprɪm/ with a short, unstressed 'ə' before 'prim'.
US and UK share /ˈtrɪˌmɛθəˌprɪm/, with minor vowel length differences and rhoticity in connected speech. Australia generally aligns with UK vowel quality but may show stronger vowel reduction in rapid speech. The main differences lie in rhythm and how the 'th' is released; some US speakers may voice the 'r' more distinctly in connected speech, while UK speakers keep a non-rhotic pattern in careful speech. Overall, the phonemes stay constant; prosody varies.
The difficulty centers on the sequence of light, rapid syllables and the dental fricative 'th' within a multi-syllable medical term. The 'methyl' cluster can encourage a slipped 'e' or 'i' vowel, while the final '-prim' risks cluster reduction in casual speech. Maintaining distinct alveolar 't' and 'th' sounds and a clear schwa before 'prim' helps keep the word precise in medical contexts.
Note the tri- prefix pronunciation as a stable starter syllable, with clear, short 'i' in 'tri,' followed by 'meth' with a soft 'e' as in 'met,' and ending with a crisp 'prim.' The tri-syllabic rhythm helps you guard the internal 'th' sound and ensures the final 'm' is released cleanly. This root-driven word often appears in quick clinical dictations, so smooth, measured delivery is important.
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Trimethoprim derives from its chemical structure and class name. The word is built from the fusion of morphemes highlighting its diaminopyrimidine core: 'tri-' (three) and 'meth' (methyl groups) combined with 'oprim' as a customary drug-suffix echoing similar antimicrobials. The prefix hints at its three methyl-related substituents within the molecule, while the '-prim' ending aligns with other antimicrobial agents in the same family. The term entered medical vocabulary in the mid-20th century as synthetic antibiotics were developed to combat bacterial resistance and urinary, respiratory, and gastrointestinal infections. First uses appear in pharmacology texts and medical journals from the 1950s and 1960s, becoming standard nomenclature as trimethoprim gained approval and widespread adoption in medicine. Over time, the name has become a familiar shorthand in clinical discussions, drug labeling, and pharmacology coursework, retaining its chemical specificity while crossing into outpatient and hospital settings." ,
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💡 These words have similar meanings to "Trimethoprim" and can often be used interchangeably.
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Words that rhyme with "Trimethoprim"
-rim sounds
Practice with these rhyming pairs to improve your pronunciation consistency:
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