How do the British say spider?
How do you spell spider?
Correct spelling for the English word “spider” is [spˈa͡ɪdə], [spˈaɪdə], [s_p_ˈaɪ_d_ə] (IPA phonetic alphabet).
Is it pronounce or Pronunciate?
The correct verb in English is pronounce, not pronunciate. An articulate and well-educated fluent English speaker who used pronunciate as a verb might be assumed to be making a joke.