lighten

definition: alleviate or remove (pressure or stress) or make less oppressive
example:
speech part: verb
synonyms: relieve
definition: become lighter
example: The room lightened up
speech part: verb
synonyms: lighten up
definition: make lighter or brighter
example:
speech part: verb
synonyms: light
definition: to become more cheerful
example: After a glass of wine, they lightened up a bit.
speech part: verb
synonyms: lighten up buoy up
definition: reduce the weight on
example:
speech part: verb
synonyms:
definition: make more cheerful
example: the conversation lightened me up a bit
speech part: verb
synonyms: lighten up buoy up

lighten is explained and pronounced

How lighten is being used?