1. Without question
   "they hired unimpeachably first-rate faculty members"
   - unquestionably

See also: unimpeachable

• anti-inflammatory drug
• anti-intellectual
• Anti-Masonic Party
• anti-novel
• anti-personnel bomb
• anti-racketeering law
• anti-Semite
• anti-submarine rocket
• anti-sway bar
• anti-takeover defense
• anti-terrorist
• anti-TNF compound
• anti-torque rotor
• anti-virus program
• anti-war movement
• antiacid
• antiadrenergic
• antiaircraft
• antiaircraft fire
• antiaircraft gun
• antialias
• antialiasing
• antianxiety agent
• antianxiety drug
• antiapartheid