How to spell BRAINEE correctly?

If you meant to say "brainy", try spelling it that way. Other possible suggestions could be "bran" or "brine". However, without more context it is difficult to determine the intended word.

• Brained I brained the idea to start a new business venture.
• Trainee The company hired several trainees to work in various departments.

Attenttion

• attention
• attentions
• attenuation
• inattention