To be absent from school without a valid excuse; to play truant.
To pretend poverty.
John said he was going to mitch the last lesson today.
To pilfer; filch; steal.
To shrink or retire from view; lurk out of sight; skulk.
To grumble secretly.
To skive; to fail to attend school when required to do so.
Used other than figuratively or idiomatically: see sag, off.
To back off from an opponent against whom one is defending.
To move too far leeward when sailing on the wind.
To fall in share price.