Whimsically is the adverb of whimsical: it tells you *how* something is done or made, and it means 'in an odd, playful, charming way'. 'The rooms are whimsically decorated' — decorated in that light, fanciful style. 'She whimsically named her car Robert' — she gave it that name for fun, with no serious reason. There are really two things it can do. First, it can describe a *style*: whimsically drawn, whimsically named, whimsically designed — done in a way that is playful and a bit strange, and pleasant because of it. Second, it can describe a *manner of speaking or smiling*: 'He smiled whimsically', meaning his smile was odd and amused, as though he found something quietly funny that he was not going to explain. Like the adjective, it has the other, cooler use too: doing something whimsically can mean doing it on a whim, with no good reason. 'Funding is handed out whimsically' means it depends on somebody's mood, not on rules — a complaint. Honestly, this is a word you will read far more than you will say. It is a bit long, and in everyday speech people are more likely to say 'in a playful way' or just use the adjective. But you should recognise it instantly in book reviews, travel writing, and descriptions of design, where it appears often.

以異想天開的方式；帶著童趣地、隨興地。修飾動作或風格，如 whimsically decorated（佈置得充滿奇趣）、smiled whimsically（似笑非笑、若有所思地笑）。同樣有「憑一時興起、毫無章法地」的貶義用法。