darken up (English, verb)
expansion: darken up (third-person singular simple present darkens up, present participle darkening up, simple past and past participle darkened up)
Senses:
glosses: To become or make (something) darker.
tags: intransitive
transitive
glosses: Synonym of black up.
Forms:
form: darkens up
tags: present
singular
third-person
form: darkening up
tags: participle
present
form: darkened up
tags: participle
past
form: darkened up
tags: past