Someone who sniffs a lot, especially because they have a cold or are crying.
The word 'sniffler' can make people think of someone who is sick or sad.
Examples:
The sniffler has a cold.
She is a sniffler when she cries.
The sniffler is always wiping their nose.
The sniffler needs a tissue.
The sniffler's nose is like a waterfall.
The sniffler is sad and needs a hug.