1660s, "not to be desired, objectionable," from un- (1) "not" + desirable. The noun meaning "undesirable person or thing" is first attested 1883. Undesired "not asked or invited" is recorded from late 15c.
例文
1. Undesirable consequences flow from these misconceptions.
これらの誤解は悪影響を与えた。
2.Certain estates are labelled as undesirable .
一部の不動産は人気のない列に分類されている。/
3.Certain chemicals can induce undesirable changes in the nervous system.
神経系に悪い変化を引き起こす化学物質もある。
4.They are the undesirable elements among the employees.
彼らは従業員の不良者です。
5.Inflation is considered to be undesirable because of its adverse effects on income distribution.