死脑筋

person with a one-track mind

• ingress
• inhale
• inherent
• inhibited
• inimical
• inimitable
• iniquitous
• initiative
• injunction
• inkling
• innate
• innocuous
• innuendo
• inoculate
• inordinate
• inquietude
• inquisitive
• insane
• inscrutable
• insert
• insider
• insidious
• insignia
• insinuate
• insipid