verb

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Bad / Hostile

Url

intimidate - To frighten or threaten someone, often to make them do something.

The bully tried to intimidate the younger students into giving him their lunch money.

adjective

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Bad / Attack

insidious - Proceeding in a gradual, subtle way, but with harmful effects

The effects of climate change are so insidious that they're not noticeable until polar bears have less ice to live on.

noun

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Good / Energy

Url

intensity - Great energy, strength, and concentration involving an activity, thought, or feeling.

During the war, the intensity of the battles decreased in the winter when it was just too cold to fight.

adjective

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Good / Exciting

intriguing - Very interesting, especially because of being strange or mysterious

Jim found the study of physics very intriguing, because the more that was explained, the more seemed to be beyond comprehension - such as the origin of the universe.

noun

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Good / Flexible

Url

intermediary - One who acts as a go-between and link between people in order to try to bring about an agreement or conclusion.

The UN formed a committee to act as an intermediary in the negotiations to end the war.

adjective

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Bad / Small

Url

insignificant - Too small or unimportant to be worth consideration.

The difference in price between the two products was so insignificant that it didn’t matter which one he chose.

adjective

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Bad / Weak

Url

innocuous - Not harmful or dangerous; safe.

The spider looked scary, but it was completely innocuous and couldn’t bite humans.

noun

See verb

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Good / Exciting

intrigue - A secret or underhanded plot or scheme

The king's court was filled with intrigue, and there were constant rumors of plots to kill the king, and of plots where the king was trying to kill others.

adjective

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Other / Shape

Url

intertwined - Twisted or woven together, physically or figuratively; closely connected or linked in a complex way.

The vines were intertwined, creating a thick canopy over the garden.

noun

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Bad / War

insurrection - A violent revolt against a government

In October 1917, Lenin led a Bolshevik insurrection that overthrew the Russian government.

verb

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Good / Smart

Url

inspire - To fill someone with the desire, confidence, or enthusiasm to do something.

The coach’s speech inspired the team to give their best effort in the championship game.

verb

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Bad / War

Url

invasion - when an army or country uses force to enter and take control of another country:

World War II started with the invasion of Poland by Germany on September 1, 1939.