Sentence:  It is possible, that had they not been so <WSD>infatuated</WSD>, as to imagine they could retrieve in Germany all that they had lost in America, the British court in the beginning of the year 1759 might have listened to terms of accommodation. 
Meaning of the word marked with <WSD> tags:  Foolish, stupid, lacking good judgement (often as a result of some external influence).