Alistair
[ˈælɪstɛr]Meaning
anglicised form of the Scottish Gaelic Alasdair, from Greek Aléxandros, 'defending men'
Background Story
Alistair is an anglicised form of the Scottish Gaelic name Alasdair, which is most likely a Scottish Gaelic variant of the Norman Alexandre or the Latin Alexander. The Greek original is Ἀλέξανδρος, built from ἀλέξω, to defend, and ἀνήρ, man. Another, much less common anglicisation of Alasdair is Allaster.
Variations
Alasdair, Alistair, Alistyre

Related Names
Alastair
Anglicised form of the Scottish Gaelic name Alasdair, from Alexander
Allister
Anglicized form of Alasdair, the Scottish Gaelic form of Alexander
Alick
Scottish Anglicized masculine given name, also used as a surname
Adrik
No documented meaning; recorded as a masculine given name in Dutch
Ahanu
No documented meaning in the sources checked
Aksel
Variant of Axel, a masculine name used mainly in Scandinavia
Alec
Short form of Alexander
Alejandro
Spanish form of Alexander, from Greek Aléxandros, "defender of man"
Aleka
A diminutive of Alexandra
Alexei
Russian form of the greek Aléxios, meaning "defender"