incautiousWiktionary 原文构词拆分in-前缀in, into, towards, within.+cautious词根/词干词源说明From in- (negative prefix) + cautious.释义（英文）形容词 Adjectivecareless, reckless, not exercising proper caution.词族派生词（2）incautiouslyincautiousness相关词（1）incaution