Simple past tense and past participle of pub.(verb)
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Use "pubbed" in a sentence
"I know that those goals are unrealistic especially via a self-pubbed route."
"Oh, and before somebody scrambles all over themselves to point out “Walt Whitman self-pubbed leaves of grass” I was meaning this and the 20th century and the phenomenon of ignorance to contemporary poetry by a lot of self publishing poets."
"In a glass-is-half-full kind of way, this phenomenon of readers passing over what they think is self-pubbed is not a bad thing."