Pronunciation: /ˈ(ju) ˈbest bɪˈliːv/
adverb a word that modifies a verb, adjective, or other adverb (in this case, 'best' is the adverb)
A1 You best believe I can count to ten in English.
A2 If you ask me for help, you best believe I will do everything I can to assist you.
B1 When it comes to cooking, you best believe I am an expert in making pasta.
B2 If you challenge me to a game of chess, you best believe I will give you a tough competition.
C1 After years of practice, you best believe I have mastered the art of public speaking.
C2 When it comes to negotiating deals, you best believe I am the best in the business.
pronoun a word that takes the place of a noun (in this case, 'you' is the pronoun)
A1 You best believe I will be at the party.
A2 You best believe I studied for the exam.
B1 You best believe I am going to ace this presentation.
B2 You best believe I know what I'm doing.
C1 You best believe I have a plan for the project.
C2 You best believe I will succeed no matter what.
formal In order to succeed in this project, you best believe that thorough research is necessary.
informal If you think I'm going to that party alone, you best believe you're coming with me.
slang You best believe I'll be there to support you no matter what.
figurative When it comes to standing up for your beliefs, you best believe that courage is key.
(you) best believed
(you all) best believe
(you) better believe
(you) best believe
(you) best believe
(you) will best believe
(you have) best believed
(you are) best believing
(you) best believe
(you) very best believe
(to) best believe
(you) best believing
(you) have best believed