[i-adj 〜い → 〜] + がり
[na-adj] + がり (limited set)
がり functions as a noun:
The suffix がり attaches to the stem of certain い-adjectives (and a few な-adjectives) to create a noun describing a person who tends to feel or act a certain way. It expresses a personality trait or habitual tendency.
Remove the final い from an い-adjective and add がり:
がり words function as nouns and can be used with だ / です, or as modifiers with の.
You can also use がりの before a noun to modify it:
がり is the noun form derived from the verb suffix ~がる (to show signs of feeling ~). While がる describes the action of showing a feeling, がり describes the person who habitually shows that tendency.
The most common がり words describe sensitivity to physical sensations or emotions: さむがり寒がり (cold-sensitive), あつがり暑がり (heat-sensitive), こわがり怖がり (easily scared), はずかしがり恥ずかしがり (shy), さびしがり寂しがり (easily lonely), いたがり痛がり (sensitive to pain).
Not all adjectives can take がり – it is mainly used with adjectives describing subjective feelings or sensations.