weakest
adj.adj. having the least amount of physical strength, power, or skill compared to others in a group. It is the form of 'weak' you use when comparing three or more things.
adj. the superlative form of 'weak', indicating the lowest degree of physical strength, structural integrity, or persuasive power within a set.
He is the weakest player on the team.
The bridge collapsed because the central support beam was the weakest part of the entire structure.
In a chain, the weakest link determines the overall strength of the system, regardless of how robust the other components may be.
Superlative adjective — typically preceded by the definite article 'the' and followed by a noun or a prepositional phrase starting with 'of' or 'in'.
the most weakestthe weakestDouble superlatives are incorrect; 'weak' is a one-syllable adjective and only takes the '-est' ending.