1. Containing small amounts of other chemicals, hence slightly impure
   "technical-grade sulphuric acid"
   - technical grade

See also: impure

• unsystematic
• unsystematically
• untactful
• untagged
• untainted
• untalented
• untalkative
• untamed
• untangle
• untangled
• untangling
• untanned
• untaped
• untapped
• untarnished
• untasted
• untaught
• untaxed
• unteach
• unteachable
• untechnical
• untellable
• untempered
• untempting
• untenable