Underway definition is - occurring, performed, or used while traveling or in motion. Synonyms for under siege include beleaguered, besieged, blockaded, encircled, surrounded, beset, encompassed, assailed, environed and hedged in. How to use underway in a sentence. Synonyms for under which in English including definitions, and related words. Synonyms for under in Free Thesaurus. Synonyms for under-use This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term under-use . The dolphin jumped out of the water, then dove back under. " Stick with the standard under these circumstances if the context is relatively formal, otherwise just like this. (ˈʌndɝ) Further down. See more. This is the British English definition of under.View American English definition of under.. Change your default dictionary to American English. Under - English Grammar Today - a reference to written and spoken English grammar and usage - Cambridge Dictionary Another word for utilization. 450-1100)) 5. under adverb. Usage definition, a customary way of doing something; a custom or practice: the usages of the last 50 years. Synonyms under (Old English (ca. PPDB, the paraphrase database (0.00 / 0 votes) Rate these synonyms: The sign was too low, so the truck could not go under. How to use undergo in a sentence. Definition and synonyms of under from the online English dictionary from Macmillan Education.. Antonyms for under. Undergo definition is - to submit to : endure. Listen to all | All sentences (with pause) Example sentences: " There was a big wave and the surfer went under. " 57 synonyms for under: below, beneath, underneath, on the bottom of, subject to, liable to, controlled by, bound by, under the control of, at the mercy of.... What are synonyms for under? It's just not very idiomatic to use situation for your context. Personally, I don't think any native speaker would ever come out with under these situations … Find more ways to say utilization, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus.