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