latest

[ley-tist] /ˈleɪ tɪst/
adjective, a superl. of late with later as compar.
1.
most recent; current:
latest fashions.
2.
last.
noun
3.
the latest, the most recent news, development, disclosure, etc.:
This is the latest in personal computers.
Idioms
4.
at the latest, not any later than (a specified time):
Be at the airport by 7 o'clock at the latest.
Origin
1375-1425; late Middle English; see late, -est
British Dictionary definitions for at the latest

latest

/ˈleɪtɪst/
adjective, adverb
1.
the superlative of late
adjective
2.
most recent, modern, or new: the latest fashions
noun
3.
at the latest, no later than the time specified
4.
(informal) the latest, the most recent fashion or development
Word Origin and History for at the latest

latest

adj.

superlative of late. The latest "the news" attested from 1886.

Idioms and Phrases with at the latest

at the latest

No later than. For example, We have to be in New York by Monday at the latest. This idiom was first recorded in 1884.