例文（１級）：boorish，extraneous

He was always a boorish person, but his extraneous comments during the
meeting were particularly offensive.
(彼は常に粗野な人だったが、彼の会議中の無関係な発言は特に不快だった。)

boorish： 粗野な
extraneous： 外来の、無関係の