alarmingly
UK[əˈlɑːmɪŋli]US[əˈlɑːrmɪŋli]
adv
in a worrying or disturbing manner
Morpheme Breakdown
alarm
ing
ly
alarm
warning, fear
ing
adjective-forming suffix
ly
adverb-forming suffix
Etymology
the word 'alarmingly' is built upon the noun 'alarm', which entered english in the late 14th century from the old french 'alarme', itself a contraction of the italian military shout 'all'arme' meaning "to arms!" this literal call to prepare for battle evolved to signify any sudden apprehension of danger. the addition of the '-ing' suffix transforms this concept into an adjective describing something that provokes such fear or concern. finally, the adverbial suffix '-ly' is appended, a productive grammatical element from old english, to form a word that describes an action performed in a manner that causes worry or shock, thus completing the journey from a battlefield cry to a modifier expressing disturbing quality.
Analysis
Structure: alarm (warning, fear) + ing (adjective-forming suffix) + ly (adverb-forming suffix)
alarm: from italian 'all'arme', meaning "to arms!"; a call to action or warning of danger. in english, it functions as the core root conveying the sense of sudden fear or alert.
ing: a suffix of old english origin used to form present participles and adjectives from verbs, here converting the noun/verb 'alarm' into the adjective 'alarming'.
ly: a suffix of old english origin used to form adverbs from adjectives, here converting 'alarming' into the adverb 'alarmingly'.
Examples
the water levels are rising alarmingly fast.
she was alarmingly thin after her illness.
the report details an alarmingly high rate of error.