Crossword Dictionary

DEEPEN

deepen - v 
make deeper; "They deepened the lake so that bigger pleasure boats could use it" 

wordplays

Synonyms

accentuate, amp (up), amplify, beef (up), boost, consolidate, enhance, heighten, intensify, magnify, redouble, step up, strengthen

merriam-webster

Examples

She waited until she heard his breathing deepen and then rose.

To deepen the channel over the bar at Durban so that steamers might enter the harbour was the cause of labour and expenditure for many years.

Third grade reading books can help children enter a new and exciting phase that deepen a love of reading.

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Etymology

c. 1600, transitive, "to make deep or deeper," from deep (adj.) + -en (1). Intransitive sense of "become deep or deeper" is from 1690s. Related: Deepened; deepening. The earlier verb had been simply deep (Middle English deopen), from Old English diepan.

etymonline