Definitions
There are 2 meanings of the phrase
At Least.
At Least - as an adverb
If nothing else (`leastwise' is informal and `leastways' is colloquial)
Example: "At least he survived"
Synonyms (Exact Relations)
at any rateleastwaysleastwiseNot less than
Example: "At least two hours studying the manual"
Synonyms (Exact Relations)
at the leastAntonyms (Opposite Meaning)
at mostExample Sentences
"I need to study for at least two hours."
"Please arrive at least ten minutes early."
"You should drink at least eight glasses of water per day."
"They have been friends for at least five years."
"The project will take at least a month to complete."