Eek/iːk/ Definition 1 of 1Pro Tip 1/3Colloquial Usage Used mainly in informal situations among friends or in casual settings. Eek! That movie gave me the creeps. Pro Tip 2/3Expressive Sounds Conveys a sudden fright or surprise through sound, not a word found in formal writing. Eek! You startled me! Pro Tip 3/3Cultural Perception Often associated with stereotypical responses to mice or insects in cartoons or movies. Eek! A mouse!