What does deepen mean?
Deepen is a versatile verb meaning to make something deeper, either literally or figuratively. In its literal sense it refers to increasing physical depth, as when engineers deepen a harbour or riverbed. More often it appears figuratively, describing growth in intensity, seriousness, or profundity — a friendship may deepen over time, an economic crisis may deepen, or study may deepen someone's knowledge of a subject. The word carries no strong positive or negative connotation on its own; its tone depends entirely on what is being deepened, which makes it useful across contexts ranging from personal reflection to political analysis. Formed by adding the common verb-making suffix '-en' to the ancient adjective 'deep', deepen belongs to a productive pattern in English that also produced words like widen, sharpen, and strengthen. Its flexibility and clarity have made it a staple of both everyday speech and formal writing.
verbTo make or become deeper or more intense; to increase in degree, strength, or complexity.
- To make or become physically deeper.
- To make or become more intense, profound, or serious.
"The crisis only served to deepen the divide between the two parties."
"They had to deepen the channel so larger ships could pass through."
"Years of practice only deepened her appreciation for the craft."
The word 'deepen' is built from one of English's oldest adjectives — 'deep' traces back over a thousand years to Old English 'dēop'.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of deepen
Deepen was formed within English from the adjective 'deep', which descends from Old English 'dēop', combined with the suffix '-en' used to create verbs meaning 'to make or become'. This pattern of adjective-plus-'-en' verb formation has been productive since Middle English times, giving rise to parallel forms such as widen, brighten, and harden. Related Germanic words include 'depth' (a derivative of the same root) and, more distantly, 'dip'. The word has been established in standard English for several centuries.
Related word forms
How deepen is actually used
Neutral register, common in both formal and everyday writing. Often used metaphorically for emotions, relationships, crises, and understanding.
Easily confused with deepen
'Widen' means to make or become broader in physical extent, while 'deepen' means to make or become greater in depth or intensity.