Sniffled is a word used to describe a nasal intake of breath that expresses sadness or crying. However, you may want to use synonyms to avoid repetition of the word. Some synonyms for sniffled include snivelled, wept softly, sobbed, whimpered, teared up, blubbered, and cried. Each of these synonyms has its own slight variation that you can use to capture the tone of the person's emotional state compared to the word sniffled. For example, snivelled suggests crying or sniffling in a whiny or self-pitying way, while sobbed suggests louder and more audible cries. In summary, you can use synonyms for the term sniffled depending on the tone, volume, and context to express the various ways people cry or express disappointment.