English English
CEFR LEVEL
3335 entries have no recorded CEFR level and are included in All.
on behalf of
phraseAs an authorized representative, spokesperson, or agent of a person or institution
↗On Cloud Nine
idiomExtremely happy, euphoric, or elated.
↗On Demand
phraseAvailable immediately whenever requested, needed, or prompted
↗On Display
phraseShown publicly so that people can clearly see, observe, or notice
↗on duty
phraseActively engaged in scheduled work or official professional responsibilities
↗on edge
phraseFeeling tense, nervous, or anxious, especially before an important outcome.
↗on fire
phrasePerforming exceptionally well; experiencing an intense burst of productivity and momentum.
↗on foot
phrase B1walking rather than traveling by vehicle
↗On Guard
phraseRemaining watchful, alert, and cautious to prevent errors, falsehoods, or risks.
↗On Hold
phraseTemporarily paused, suspended, or postponed until future notice or clarity.
↗On Line
phraseOperating via the internet; connected in real-time, or organized in structured alignment
↗on my way
phrase A1currently traveling along a journey toward a destination
↗on one condition
phrase A2only provided that a specific requirement is fulfilled
↗On Pins and Needles
idiomExtremely anxious, tense, or in suspense about what will happen.
↗On Purpose
phraseDeliberately, intentionally, and with premeditated calculation rather than by accident.
↗On sale
phraseavailable to be bought at a price lower than usual
↗on schedule
phrase A2At the expected time; progressing according to the planned timetable; at the expected or planned time without any delay
↗On Second Thought
phraseAfter thinking about something again and reconsidering one's decision
↗On Strike
phraseEngaged in an organized collective refusal to work or cooperate as a protest
↗On Target
phraseCompletely accurate, highly relevant, and precisely addressing the core issue
↗On the Air
phraseBroadcasting live on radio, television, or internet stream
↗On the Ball
idiomAlert, quick to understand, attentive, and competent.
↗On the Blink
idiomMalfunctioning, failing, or not operating properly (usually said of a machine or device).
↗On the Cheap
idiomSpending as little money as possible; done inexpensively, sometimes with lower quality.
↗on the contrary
phraseUsed to introduce an opposing statement or to emphasize that the opposite is true.
↗On the Dot
idiomPunctually; exactly at the designated time.
↗On the Fence
idiomUndecided or neutral between two opposing choices or opinions.
↗On the Fly
idiomSpontaneously, hastily, or while continuing an activity without pausing to plan.
↗On the Fritz
idiomBroken, out of order, or operating erratically.
↗On the Go
phraseConstantly active, moving around, or performing tasks while traveling; extremely busy.
↗On the House
idiomProvided free of charge by the establishment, especially food or drinks in a hospitality venue
↗On the Level
idiomHonest, straightforward, sincere, and trustworthy
↗On the Line
idiomAt risk, in jeopardy, or subject to being lost
↗on the main road
phrase B1located alongside or on a major, busy street
↗On the Move
phraseIn the process of traveling, changing physical locations, or advancing continuously.
↗on the other hand
phraseUsed to introduce a contrasting fact, view, or perspective
↗On the Road
phraseTraveling for an extended period, especially on business tours or long road journeys.
↗on the same page
idiom B1sharing the same understanding, opinions, or agreement about a topic; Sharing the same mindset, understanding, or agreement; in agreement about what needs to be done; having a shared understanding
↗on the spot
phraseImmediately and without prior warning; or placed in a challenging situation requiring instant recall or reaction.; Immediately and without hesitation; also placed in an awkward position requiring an instant choice
↗On the Spur of the Moment
idiomDone spontaneously or impulsively without previous thought or planning
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