highly
UK[ˈhaɪli]US[ˈhaɪli]
adv
to a high degree or level; very
adv
with approval or praise
Morpheme Breakdown
high
ly
high
of great vertical extent
ly
adverb-forming suffix
Etymology
the word 'highly' is a transparent formation from its root adjective 'high', which traces back to proto-germanic 'hauhaz', itself from the proto-indo-european root 'keuk-', meaning 'to bend, curve, vault', conceptually linking to something arched or elevated. the adverbial suffix '-ly' originates from old english '-līċe', meaning 'having the form or body of', which evolved into a general marker for manner. the literal combination, 'in a high manner', evolved semantically to express intensity ('to a high degree') and, by figurative extension, esteem ('with high approval'), perfectly illustrating how a concrete spatial concept transforms into an abstract intensifier and evaluative term.
Analysis
Structure: high (of great vertical extent) + ly (adverb-forming suffix)
high: from old english 'hēah', of germanic origin; related to dutch 'hoog' and german 'hoch'. functions as the adjectival root denoting elevation or great degree.
ly: from old english '-līċe', an adverbial suffix derived from the adjective suffix '-līċ'. its functional role is to convert adjectives into adverbs.
Examples
she is a highly intelligent and capable leader.
the film was highly praised by critics.
this is a highly sensitive matter requiring discretion.