chirrup¹/ʹchirəp/ verb intrans (chirruped, chirruping)

chirrup²noun

• immune response
• immune system
• immunise
• immunity
• immunize
• immuno-
• immunoassay
• immunochemistry
• immunocompetent
• immunocompromised
• immunodeficiency
• immunogenesis
• immunoglobulin
• immunology
• immunoreaction
• immunosuppression
• immunosuppressive
• immunotherapy
• immure
• immutable
• IMO
• imp
• imp.
• impact
• impacted