palatalize AmE
palatalise BrE

This is considered a "hardening" since retroflex sounds are difficult to palatalize.

On the other side, in some dialects of eastern Shandong, the velar initials have failed to palatalize.

In about 20% of dialects, the alveolar sibilants failed to palatalize, remaining separate from the alveolo-palatal initials.

Western Javanese tend to palatalize every last vowel of a word as euphony, e.g.: Ana apa?

Finally, in some parts of the county, there is a tendency to palatalize the consonant cluster in word-initial and medial position, thereby rendering it as something more closely approaching [tl].

Some speakers palatalize more than others, but in general coda alveolars will appear before bilabial and velar consonants and at the end of a sentence, while coda postalveolars are dominant before postalveolar and alveolar consonants.