Snow-white polar bear Eric and he almost shot (14)

'snow-white' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

'polar bear eric and he almost shot' is the wordplay.
'and' is a charade indicator (letters next to each other).
'almost' means to remove the last letter (almost the whole word is kept).
'shot' indicates anagramming the letters.
'he' with its final letter taken off is 'h'.
'polar'+'bear'+'eric'+'h'='polarbearerich'
'polarbearerich' with letters rearranged gives 'IRREPROACHABLE'.

Can you help me to learn more?