optimistic adj.
VERBS appear, be, feel, look, seem, sound | become | remain
ADV. extremely, highly, strongly, very He remained strongly optimistic that an agreement could be reached. | excessively, hopelessly, incredibly, overly, ridiculously, unduly, wildly These estimates were wildly optimistic. | a bit, fairly, a little, quite, rather, reasonably, somewhat | basically, essentially, generally an essentially optimistic view of human nature | cautiously, guardedly, quietly I don't want to exaggerate our chances, but I'm cautiously optimistic. | cheerfully
PREP. about He's very optimistic about his chances.
You can also check other dicts: optimistic (English, 中文解释 ), wordnet sense, Collins Definition