469. Hubris, Arrogance

Hubris: Excessive pride
Arrogance: Overbearing pride

470. Hypocrisy, Pretense

Hypocrisy: False virtue
Pretense: False display

471. Iconic, Symbolic

Iconic: Widely recognized
Symbolic: Representing ideas

472. Illicit, Illegal

Illicit: Forbidden by law
Illegal: Against the law

473. Imminent, Impending

Imminent: About to happen
Impending: Likely soon

474. Immutable, Unchanging

Immutable: Not changeable
Unchanging: Constant

475. Impartial, Neutral

Impartial: Unbiased
Neutral: Not taking sides

476. Impede, Hinder

Impede: Obstruct progress
Hinder: Delay

477. Imperative, Essential

Imperative: Necessary
Essential: Very important

478. Implacable, Unforgiving

Unforgiving: Not merciful

479. Implicit, Implied

Implicit: Suggested indirectly

480. Implore, Beg

Implore: Plead urgently