KEY: Assay.
SYN: Test, endeavor, prove, try.
ANT: Survey, conjecture, guess, scan.

• Insult \v
• Insuperable, [See SUPERABLE]
• Insupportable
• insuppressible, [See SUPPRESSIBLE]
• Insure
• Insurgent \a
• Insurgent
• Insurmountable, [See INSUPERABLE]
• Insurrection
• Insusceptible, [See SUSCEPTIBLE]
• Intact
• Intangible, [See TANGIBLE]
• Integrate
• Integration, [See INTEGRATE]
• Integrity
• Integument
• Intellect
• Intellectual
• Intelligence
• Intelligible, [See INSCRUTABLE]
• Intemperate \a
• Intend, [See PURPOSE]
• Intensity
• Intent \adj
• Intentional