Guarantee
Definition 1 of 5
Pro Tip 1/2
Non-legal Commitment
A 'guarantee' can express a personal commitment without legal backing. You have my guarantee that I'll return your book next week.
Pro Tip 2/2
Stress Strength
Emphasize the strength of 'guarantee' to convince someone of your promise. Our service comes with a satisfaction guarantee; we won't rest until you're happy.