mirus

Mirus, mira, mirum, first-and-second declension, from the same root as miror, "to wonder at". Its commonest shape by far is the neuter mirum used impersonally with a clause hanging off it: mirum est quod, mirum est si, and the idiomatic mirum ni, "it would be a wonder if not", which is Latin for "I would bet on it".

Mirum in modum is the fixed adverbial phrase, "in a remarkable manner"; the plain adverb mire also exists and is commoner in verse. Watch the range: the word covers admiration and unease equally, so mirus can mean marvellous or simply odd, and only tone decides. English takes miracle, mirage, mirror and admire; Spanish mirar, "to look", is the same root gone thoroughly practical.