1. Most unusual, strange, or bizarre in appearance or behavior.
Usage: superlative form of 'freaky'; informal
2. Most frightening or eerie; causing fear or unease.
Usage: superlative form of 'freaky'; informal

Examples

• That was the freakiest movie I've ever seen—I couldn't sleep afterward.
• The freakiest part of the haunted house was the room with all the mirrors.
• She has the freakiest sense of humor; nobody else finds those jokes funny.
• The freakiest weather we've had all year happened last Tuesday.
• His freakiest talent is being able to bend his fingers backward.
• That's the freakiest coincidence—we both wore the same outfit to school.