Common mistakes by native language
Japanese speakers
Mistake: Pronouncing "the" the same way in every context, using [ðə] even here where it precedes the vowel-initial word "other", producing "zə other" instead of the correct vowel-shifted form.
Why: Many textbooks first teach a single form of "the", [ðə], without emphasizing that English speakers automatically switch to [ði] before vowel sounds, so learners often apply the consonant-form everywhere.
Fix: Before a vowel sound, shift "the" to [ði]: [ðiˈʌðɝˈsaɪd]. Practice pairs like "the apple" [ði] vs. "the book" [ðə] to internalize when each form is used.
Korean speakers
Mistake: Substituting a d or z sound for the voiced th [ð] in both "the" and "other", producing something like "za oder side".
Why: Korean has no equivalent to the English voiced interdental fricative [ð], so learners commonly replace it with the closest available consonant, usually d or z.
Fix: Practice placing the tongue tip lightly between the teeth for a light, voiced [ð] in both "the" and "other": [ðiˈʌðɝ]. Feel the vibration in your throat while your tongue stays between your teeth.
Spanish speakers
Mistake: Pronouncing the stressed vowel in "other" too close to a pure [a] sound, like "AH-ther", instead of the correct central open-mid vowel.
Why: Spanish vowel inventory doesn't include the English stressed schwa-like vowel [ʌ], so learners often substitute the nearest Spanish vowel, which changes the vowel quality noticeably.
Fix: Practice the [ʌ] vowel in isolation — a short, central, relaxed sound, distinct from both [a] and [ə] — then apply it to "other": [ˈʌðɝ], keeping the jaw relatively relaxed.
Notes
"The other side" is a simple but extremely common noun phrase referring to the opposite side of something, whether physical (a street, river, or room) or figurative (an opposing viewpoint or argument). The key pronunciation feature here is the vowel-triggered alternation of "the": before a consonant sound, "the" is pronounced [ðə], but before a vowel sound — as in "other", which starts with the vowel [ʌ] — it shifts to [ði]. This rule is entirely based on sound, not spelling, and applies automatically and unconsciously for native speakers, which is why getting it wrong is one of the more noticeable markers of non-native speech, even though the rule itself is simple once learned. The word "other" also contains the voiced interdental fricative [ð], the same sound found in "the" itself, meaning the phrase actually features this challenging consonant twice in quick succession: [ðiˈʌðɝˈsaɪd] in General American, or [ðiˈʌðəˈsaɪd] in RP, where the r at the end of "other" is not pronounced unless followed directly by a vowel.