Synonyms of lengthening

Noun

1. prolongation, protraction, perpetuation, lengthening, continuance, continuation

usage: the act of prolonging something; "there was an indefinite prolongation of the peace talks"

Verb

1. lengthen, increase

usage: make longer; "Lengthen this skirt, please"

2. lengthen, grow

usage: become long or longer; "In Spring, the days lengthen"