1. Straight up or down without a break
   - sheer, orthogonally 
2. In a perpendicular manner
   "this red line runs perpendicularly to the green line"
   - orthogonally

See also: perpendicular

• ineffaceable
• ineffaceably
• ineffective
• ineffectively
• ineffectiveness
• ineffectual
• ineffectuality
• ineffectually
• ineffectualness
• emplastic
• employ
• employable
• employe
• employed
• employee
• employee ownership
• employee savings plan
• employee stock ownership plan
• employee turnover
• employee-owned business
• employee-owned enterprise
• employer
• employment
• employment agency
• employment agent