to steal; to plagiarize; to steal (a technique, idea, etc.); to do stealthily; to do during scant time; to steal a base
to steal a glance (at); to look furtively (at); to take a peek (at)
to do without being seen (by); to do behind (someone's) back; to do without the knowledge of (e.g. one's parents)
surreptitious glance; looking furtively
sneaking a bite; snitching food
taking (a picture or video) secretly; taking a sneak shot; making a secret (video) recording; filming without someone's knowledge
brazen-faced (about one's misdeed); audacious (despite being in the wrong); shameless; impudent
to do without being seen; to do behind others' backs; to do secretly; to do without the knowledge of others
reading (someone else's letter, diary, etc.) surreptitiously; reading secretly; reading over someone's shoulder
person who steals flowers (esp. cherry blossoms)
to spare oneself; to spare oneself the trouble; (arch.) to nullify someone's efforts
the wrongdoer never lacks a pretext; even thieves have their reasons; give the devil his due
throwing good money after bad
chuckle; snigger; laughing secretly
making a secret audio recording
there's a reason behind every action; (lit.) a burglar's midday nap (is taken so that he can rob people's houses in the night)
thievish nature (character); thieving heart; cunning and greedy character
thieving cat; adulterer; homewrecker
the sand on the beach may disappear, but the makings of thieves never shall
taking a cut from a thief's plunder; vile deed
the doting parent's purse is plundered; (lit.) the thief caught turns out to be one's own son
person who likes alcohol and sweets equally well; person who can drink much alcohol without becoming tipsy
you cannot excuse a bad deed with a petty act of benevolence; (lit.) steal a pig and give the feet for alms