随意 means 'at will' or 'freely, without constraint' — it describes doing something in a relaxed, spontaneous, or unstructured way. The character 随 (suí) means 'to follow' or 'to go along with', while 意 (yì) means 'intention', 'will', or 'mind'. Together, they literally suggest 'following one’s own intention', implying personal choice without external pressure or fixed rules.

This word is commonly used in everyday spoken and written Chinese to express flexibility, informality, or lack of strict requirements — for example, when inviting someone to eat, sit, speak, or choose something. It often carries a friendly, accommodating tone and appears in contexts like dining, social gatherings, scheduling, or creative activities. While neutral in register, 随意 can occasionally sound slightly dismissive if overused in formal settings, so context and tone matter.