Th-stopping

Irish English, such pairs are indeed merged.^[1] Variation between both dental and alveolar forms exists in much of the working-class English speech of North America and sometimes southern England. It is also common for babies and toddlers, who are still learning to talk and/or haven't fully grown their front teeth capable of producing the Th sound. Th-stopping occurred in all continental Germanic languages

stops, rather than as fricatives. Usually they remain dental, so that the oppositions /t-θ/ and [d-ð] are not lost. Thus thanks may be pronounced [θæŋks], [tθæŋks], or [t̪æŋks] in decreasing order of occurrence;^{[citation needed]} all are distinct from tanks [tʰæŋks]. The [t̪] variant has a weakish articulation. The /t-θ/ opposition may be lost, exceptionally in the environment of a following /r/ (making three homophonous with tree), and in the case of the word with, (so that with a may rhyme with the non-rhotic pronunciation of "bitter-bidder"; with you may be [wɪtʃu], following the same yod-coalescence rule as hit you. These pronunciations are all stigmatized.^{[citation needed}

African American Vernacular English, in the words with and nothing, [t] may occur corresponding to standard [θ], with the [t] itself being succeeded by the t-glottalization rule: thus [wɪʔ] for with and [ˈnʌʔɪn] for nothing.^[2]: 83 Th-stopping is also reported for some other non-initial [θ]s, apparently particularly when preceded by a nasal and followed by a plosive, as keep your mouth closed.^[2]: 90 In initial position, [θ] occurs in AAVE just as in standard accents: thin is [θɪn], without the stopping of West Indian accents.^[3]

Mid-Atlantic region (for example, in Philadelphia and Baltimore),^[4] It is also heard in a minority of speakers of England's Estuary dialect (for example, in London), but only in the case of word-initial /ð/.^[5] Many speakers of Philippine English