tugevnema tähendus null.

freshen [freshened, freshening, freshens]▼◼◼◼verb
[UK: ˈfreʃ.n̩] [US: ˈfreʃ.n̩]

strengthen [strengthened, strengthening, strengthens]▼◼◼◻verb
[UK: ˈstreŋ.θn̩] [US: ˈstreŋ.θn̩]

consolidate [consolidated, consolidating, consolidates]▼◼◻◻verb
[UK: kən.ˈsɒ.lɪ.deɪt] [US: kən.ˈsɑː.lə.ˌdet]