thorny

US /ˈθɔːr.ni/
UK /ˈθɔːr.ni/
"thorny" picture
1.

とげのある, いばらの

covered with thorns or spines

:
The rose bush had many thorny stems.
バラの茂みにはたくさんのとげのある茎があった。
Be careful, that plant is very thorny.
気をつけて、その植物はとてもとげとげしい
2.

厄介な, 困難な, 複雑な

causing difficulties or disagreements; complex and difficult to deal with

:
The negotiations faced many thorny issues.
交渉は多くの厄介な問題に直面した。
It was a thorny problem that required careful consideration.
それは慎重な検討を要する厄介な問題だった。