Undefined

Name: Undefined
Address: 35 King William St, Hamilton, ON, Canada, L8R 1A1
Telephone: (905) 393-8343
Price range: CAN$31 to CAN$50
Rating: 4.7

4.7 (858)

CAN$31 to CAN$50

Bistro

35 King William St, Hamilton, ON L8R 1A1

Make a reservation

2 people

Jun 22, 2025

11:30 PM

Booked 10 times today

Experiences are available.

About this restaurant

Great for creative cocktails
Good for special occasions
Neighborhood gem

UnDefined has been changing the way people think about dining out in Hamilton. Voted one of Hamilton's best all-around restaurants for 2021, 2022, 2023, we are making a big impact on King William Street. With an evolving, seasonal and whimsical approach, our passion is what drives us every day. We strive to push the limits, and for our team, it is just what we love to do. We cook from scratch because that is just the way it should be. We love to challenge the way we all think about dining out.

We believe that there is no reason to put yourself in a box when going out with friends, so we do not do that here. Whether it is a night out with friends, an intimate dinner for two, or just something extraordinary, We are not afraid to take the familiar and turn it into something memorable. If it tastes good, we will put it on a plate, in a glass, or whatever. Our mantra is as simple as eat, drink, and enjoy!

Dining areas

Additional information

Dining style
Casual Elegant
Price
CAN$31 to CAN$50
Cuisines
Bistro, Farm-to-table, Cocktail Bar
Hours of operation
Brunch Sat, Sun 10:00 am–3:00 pm Lunch Wed–Fri 11:30 am–4:00 pm Dinner Daily 4:00 pm–10:00 pm Bar Fri, Sat 10:00 pm–12:00 am
Phone number
(905) 393-8343
Website
http://www.eatundefined.com/
Payment options
AMEX, Mastercard, Visa
Dress code
Business Casual

Location
35 King William St, Hamilton, ON L8R 1A1
Neighborhood
Hamilton
Cross street
James Street North & King William
Parking details
Street Parking
Public transit
James Street North & King William
Additional
Bar/Lounge, Beer, Chef's Table, Cocktails, Corkage Fee, Full Bar, Gender Neutral Restroom, Gluten-free Options, Happy Hour, Late Night, Non-Smoking, Patio/Outdoor Dining, Vegan, Weekend Brunch, Wine

Gift card

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Experiences

Brunch UnDefined!
May 1, 2025 - Dec 31, 2025
Join us for an UnDefined brunch Saturdays & Sundays. UnDefined is know for its ever evolving menus and unique additions. Indulge in some of our favorites as well as a seasonal a la carte offerings to brunch without definition. Reservations highly recommended - No additional costs - Menu offering is a la carte

Popular dishes

What 858 people are saying

Undefined reviews from people who’ve dined at this restaurant. Based on recent rating.

Overall ratings and reviews

Reviews can only be made by diners who have eaten at this restaurant

4.7

4.7 based on recent ratings

4.7Food
4.7Service
4.7Ambience
4.4Value

Noise • Moderate

Loved For

Toronto / Ontario
Bistro
Southern Ontario
Innovative
Southern Ontario
Great for creative cocktails

Review summary

AI-generated from verified diner reviews

Undefined offers a remarkable dining experience with "amazing food," "creative menu," and an "incredible atmosphere." Regulars rave about the "outstanding biscuits," "delicious brunch," and "fantastic cocktails." The attentive staff, including standout servers like Hana and Hannah, enhance the visit. While some seating options could improve, the overall experience remains "worth the try."

858 Reviews

D
Debashis
Toronto / Ontario1 review
3.0
Dined on June 15, 2025
1. Overall 3
2. Food 4
3. Service 3
4. Ambience 4
Chicken biscuit benny was really good. Short staffed for busy Father’s Day so service suffered a little, but it was always with a smile. Recommend for brunch.
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J
James
New York City32 reviews
5.0
Dined on June 14, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Food and service were awesome. Hope I have the opportunity to dine there again.
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J
Jason
Toronto / Ontario1 review
5.0
Dined on June 14, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Everyone from the server to bartender, manager and chefs are top notch. Food and presentation were right on the mark. I would 100% recommend this place.
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J
Jaimie VIP
Toronto / Ontario10 reviews
5.0
Dined on June 8, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
We never have a bad experience- everything the kitchen does is mouthwatering and the cocktails are fun and well balanced.
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j
jared
Toronto / Ontario6 reviews
5.0
Dined on May 24, 2025
1. Overall 5
2. Food 5
3. Service 4
4. Ambience 5
The biscuits are the BEST!! A must try for anyone!
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A
ABIR
Toronto / Ontario3 reviews
5.0
Dined on May 19, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
This is by far the best restaurant I have been lately the food was 10/10. Hana our server was amazing also ,professional and always there asking if we needed anything, with friendly smile . The atmosphere is beautiful the ambiance is amazing the food higher end that what we though. It’s honestly worth the try looking forward to going there again. By the way the food presentation was unreal also. Can’t say enough about this place. Price is very reasonable also had mention that. Thanks To my son for recommending this restaurant.
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M
Marlene
Toronto / Ontario1 review
5.0
Dined on May 17, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Delicious food! And great service. I would recommend this restaurant to any foodee
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B
Brenden
Toronto / Ontario2 reviews
5.0
Dined on May 17, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
Amazing brunch, 10/10, will definitely be coming back for more.
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R
Rene
Montreal / Quebec1 review
5.0
Dined on May 11, 2025
1. Overall 5
2. Food 5
3. Service 5
4. Ambience 5
We went for brunch and the food was soooo delicious!!! The biscuits were so buttery, the texture was perfect. The menu was also so creative and the flavours worked so well in everything we had. All cooked to perfection and our server was great!
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C
Cindy
Toronto / Ontario17 reviews
4.0
Dined on May 11, 2025
1. Overall 4
2. Food 5
3. Service 5
4. Ambience 4
The food and service was amazing! Such a nice little spot for a fantastic brunch. Our only issue was that our reservation for “bar seating” meant 4 individual stools lined up at the bar! Not the best for a Mother’s Day meal. But acknowledging that it was totally my responsibility to check exactly what “bar seating” meant. I was picturing high-top tables and chairs, versus stools at the bar. My bad. But overall, a great meal with wonderful service staff.
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FAQs

Undefined is rated 4.7 stars by 858 OpenTable diners.

Undefined does offer gift cards which you can purchase here.

Yes, you can generally book this restaurant by choosing the date, time and party size on OpenTable.