be on guard イディオム

catch you off guard

surprise you, say what you do not expect Did my comment about dog poop catch you off guard?

guard is down

not ready for a fight, not protecting yourself I wasn't ready for her criticism. My guard was down.

off guard

not alert to the unexpected It caught me off guard when she suddenly asked me to lend her $800.

on guard

careful, wary He has been keeping on guard since the accident last month.

on your guard

careful, cautious Be on your guard when you buy a used car - don't buy a lemon.

on one's guard

Idiom(s): on (one's) guard

Theme: CAUTION

cautious; watchful.
• Be on guard. There are pickpockets around here.
• You had better be on your guard.

guard against

Idiom(s): guard against sb or sth

Theme: CAUTION

to take care to avoid someone or something.
• Try to guard against getting a cold.
• You should guard against pickpockets.

catch sb off guard

Idiom(s): catch someone off guard AND catch one off one's guard

Theme: SURPRISE

to catch a person at a time of carelessness.
• Tom caught Ann off guard and frightened her.
• She caught me off my guard, and I told the location of the jewels.

catch one off one's guard

As much use as a chocolate fire-guard

A fire-guard is used in front of a fireplace for safety. A chocolate fire-guard is of no use. An alternative to 'As much use as a chocolate teapot'.

be on guard

To be actual active and alert, so as to abstain crisis in a accurate situation. A careful pronoun can be acclimated amid "on" and "guard." When you're in the big city, you charge to be on bouncer adjoin criminals. I'm on my bouncer because I apperceive the earlier guys on the aggregation are activity to antic me. I achievement she's on her guard. Those trails can be a bit betraying to climb.Learn more: guard, on

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More Idioms/Phrases

Arrow in the quiver As cold as ice As cold as stone As cool as a cucumber As good as new As mad as a hatter As mad as a wrongly shot hog As much use as a chocolate fire-guard As much use as a chocolate teapot As much use as a handbrake on a canoe As neat as a new pin As one man