IPA: /ˈaʊtsaɪzd/
KK: /aʊtsaɪzd/
Referring to something that is larger than normal or expected in size.
The outsized chair was too big for the small room.
To be larger than the usual size or to exceed normal dimensions.
The outsized shoes were difficult to find in stores.
Past: outsized
Past Participle: outsized
Outsized is formed from "out-" (meaning beyond or outside) and "sized" (from the root "size", which comes from Old French *size*, meaning measurement or dimension). The word "outsized" means beyond the usual size or larger than normal.
Think of something that is 'beyond' ('out-') the usual 'measurement' ('size') — that's why outsized means larger than normal.