frightening

The word 'frightening' is built upon the Old English noun 'fright', which denotes a sudden, intense fear. The addition of the Germanic verb-forming suffix '-en' transformed it into the verb 'frighten', meaning 'to cause fear'. Finally, the present participle suffix '-ing' was applied, turning the action into a descriptive adjective. Thus, the literal construction "causing-to-fear" perfectly captures the modern meaning of inducing alarm or terror. This morphological journey from a Germanic noun for fear to a causative verb and finally to a descriptive adjective showcases a clear and logical evolution within the English language.

Structure: fright (fear) + en (verb suffix) + ing (adjective suffix) - fright: From Old English fyrhto, fyrhtu (fear, dread), of Germanic origin. Functions as the core root noun. - en: A verb-forming suffix from Old English -nian, used to form verbs from adjectives or nouns. Here, it converts the noun 'fright' into the verb 'frighten'. - ing: A suffix from Old English -ende, -ung, used to form present participles and adjectives from verbs. Here, it creates the adjective 'frightening' from the verb 'frighten'.