you/you'd better believe it

:  the one or ones being addressed — compare thee, thou, ye, your, yours

:  one

:  you had :  you would

: comparative ofgood

:  greater than half

:  improved in health or mental attitude

:  to make better (see ¹better): such as

:  to make more tolerable or acceptable

:  to make more complete or perfect

: comparative ofwell

:  in a more excellent manner

:  to greater advantage :  preferably

:  something better (see ¹better)

:  a superior especially in merit or rank

:  advantage, victory

:  had better (see ³better 1b)

:  to have a firm or wholehearted religious conviction or persuasion :  to regard the existence of God as a fact

:  to accept something as true, genuine, or real

:  to have a firm conviction as to the goodness, efficacy, or ability of something