"Why". Science is the study of everything and trying to figure out how and why things work.
One scientific word that begins with "B" is "biology," which is the study of living organisms.
Wonderful.
Wholeheartedly is a long word. It begins with the letter w.
One such word is witty.
logic
· windy
dewdeclawdisallowdisavowdrawdrew
well-known
· weather satellites
The Holocaust was wicked. It begins with W.
Weightlessness is a space word. It begins with the letter w.
No Spanish words begin with W but some words borrowed from English, like 'walkman', 'water' (meaning 'toilet'), 'waterpolo' and 'whisky'.