-ed (phonetic)

The regular past tense and participle inflection in current English is '-ed'. This represents different sounds:

• it is most commonly a plain '-d' (IPA: /d/), but
• after alveolar consonants the vowel '-e-' is realized and '-ed' becomes the syllable '-id' (/ɪd/), as in the disyllables 'wanted' (/'wɒn tɪd/) and 'worded' (/'wɜː^r dɪd/);
• after some other consonants, such as '-s-', the sound is the unvoiced consonant '-t-' rather than the voiced '-d-': 'crossed' is the monosyllable 'crossed' (/krɒst/), and 'laugh' gives 'laughed' (/lɑːft/).

You may also want to see -s (phonetic).

In Early Modern English, the '-ed' inflection was often realized as a full syllable, '-id', /ɪd/. See further -ed in archaic English.