Centred vs. Centered: What's the Difference?
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"Centred" is the British English spelling, while "Centered" is the American English spelling; both refer to being positioned in the middle or having a focus.
-CENTRED | English meaning - Cambridge Dictionary
dictionary.cambridge.org
Meaning of -centred in English -centred suffix [ after noun ] UK ( US -centered) giving the most attention to a particular type of person: people-centred management policies a user-centred approach to web design
CENTERED Synonyms: 143 Similar and Opposite Words - Merriam-Webster
www.merriam-webster.com
Synonyms for CENTERED: equable, composed, unshakable, disciplined, unflappable, imperturbable, well-balanced, self-contained; Antonyms of CENTERED: disturbed, perturbed, upset, agitated, anxious, bothered, unsettled, distressed
centered - Wiktionary, the free dictionary
en.wiktionary.org
Adjective centered (comparative more centered, superlative most centered) Middlemost; located at the center. (especially Canada, US) Emotionally stable, calm, serene; having a balanced mind. [from the 1970s]