In England we spell it Realised, with an S not a Z.
Realised is the British English.
The US English is realized.
Realise.
The spelling "realises" is the correct UK variant, and the US spelling is realizes (is aware of).
You spell it like this, tyre, for plural, it's tyres.
Behaviour is the correct British English spelling.
The US spelling is organized. The UK spelling is organised.
Endeavour is the British English spelling which is used in the UK.The US English spelling is endeavor.
The likely word is "realized" (UK realised), meaning understood, or completed.
Forty.
Decipher is how it is spelled in British English.
The spelling "realises" is the correct UK variant, and the US spelling is realizes (is aware of).
You spell it like this, tyre, for plural, it's tyres.
Behaviour is the correct British English spelling.
The UK and US spellings are both wonderful. This is not a word that has variant spellings.
The US spelling is organized. The UK spelling is organised.
Endeavour is the British English spelling which is used in the UK.The US English spelling is endeavor.
The correct spelling is "mesmerised" (UK English) or "mesmerized" (US English).
The spelling is the same as the US: alleviate (reduce a problem)
Analyze is the correct English spelling, though Brits may spell it as analyse.