Focussed or Focused? Which Spelling Is Correct? “Focussed” is an alternative spelling of the past tense and past participle of “to focus ” This spelling is more prevalent in British English and other Commonwealth countries
“Focussed” vs. “Focused” – Which is Correct? Both “focused” and “focussed” are correct, depending on the variety of English being used In American English, “focused” is the standard spelling for the past tense and past participle of “focus ”
focussed - Wiktionary, the free dictionary The Oxford English Dictionary describes the spelling focussed as irregular The spelling focussed is a widely seen UK spelling but focused, (focuses, focusing) is more common in prestige publications