- ice-cold
- injury time
- idealist
- iron bar
- ideology
- infirmarian
- idol
- in the balance
- if
- ignominious
- ilk
- ill-advised
- illusory
- illustrious
- interoperability
- imbalance
- immaculate
- ignominous
- impale
- in limbo
- impinge
- implacable
- implication
- in a jiffy
- impolitic
- impose oneself
- impossible
- impercipient
- impostor
- israelite
- impromptu
- improvise
- impurity
- iron shield
- inadequate
- incivility
- inappreciable
- incline
- incognito
- intercropping
- incensed
- inception
- incidence
- idiophones
- incomparably
- in sad earnest
- indefinable
- independent
- indicated
- indication
- in public
- indiscreet
- indistinguishable
- illegal operation
- industrious
- immovability
- in round figures
- inexpensive
- inexplicable
- in question
- infantry
- infiltrate
- inflate
- indwell
- infectious
- informed
- insole
- internic
- in scale
- inherent
- inhibit
- in the doldrums
- injudicious
- insistent
- imitable
- instalment
- instant
- in doubt
- immoral path
- instigator
- instinct
- instruction
- instructor
- instrumental
- insubordinate
- incommensurability
- inner house
- intense
- intensive
- in our midst
- intrigue
- invalid
- in good part
- inchoation
- inventory
- insulator
- inner eye
- irrecoverable
- isolated
- imposition