The adverb 'warningly' is a modern English formation built upon the ancient verb 'warn'. The core verb 'warn' originates from the Proto-Germanic warnōną, meaning "to make aware, take care," which is itself likely derived from the Proto-Indo-European root wer-, meaning "to perceive, watch out for." This root conveys a fundamental sense of attentive awareness. The suffix '-ing' transforms the action into a descriptive quality, creating the adjective 'warning,' which describes something that serves as a caution. Finally, the adverbial suffix '-ly,' with its own lineage from Old English, attaches to this adjective to specify the manner of an action. Thus, 'warningly' logically encapsulates the concept of performing an action in a way that makes one's perception of danger evident to others.

Structure: warn (to caution) + ing (adjective suffix) + ly (adverb suffix) - warn: From Old English warnian, meaning "to take heed, guard against, or give notice of danger." Its functional role is the core verb root. - ing: A suffix of Germanic origin used to form present participles and adjectives from verbs. Its functional role is to convert the verb 'warn' into the adjective 'warning'. - ly: A suffix from Old English -līce, used to form adverbs from adjectives. Its functional role is to convert the adjective 'warning' into the adverb 'warningly'.