doubt
要点疑い、疑う
意味
- 疑い,疑惑;疑わしさ,疑問
- を疑う,疑問に思う
例文
In a way you are right, but I still have doubts.
ある意味では君は正しいが、まだ疑問が残る。
No doubt she loves him, but she won't marry him.
確かに彼女は彼のことを愛しているが、結婚はしないだろう。
No doubt he did his best, but he didn't succeed.
確かに彼は最善を尽くしたが、成功しなかった。
語源
英語の原文（Wiktionary）
The verb is derived from Middle English douten (“to doubt, fear, worry”) [and other forms], from Old French douter, doter, duter (compare Middle French doubter), from Latin dubitāre (“to be uncertain, doubt; to hesitate, waver in coming to an opinion; to consider, ponder”); the further etymology is uncertain, but one theory is that dubitō may be derived from dubius (“fluctuating, wavering; doubtful, dubious, uncertain”), from duhibius (“held as two”), from duo (“two”) (ultimately from Proto-Indo-European *dwóh₁ (“two”)) + habeō (“to have, hold”) (possibly ultimately from Proto-Indo-European *gʰeh₁bʰ- (“to grab, take”)).