21-letter words containing o, r, t, h, d, i
- to let your hair down — If you let your hair down, you relax completely and enjoy yourself.
- to rear its ugly head — If something unpleasant rears its head or rears its ugly head, it becomes visible or noticeable.
- to rub shoulders with — If you rub shoulders with famous people, you meet them and talk to them. You can also say that you rub elbows with someone, especially in American English.
- to take the high road — to take the course of action which is safest and most familiar
- trichloroacetaldehyde — chloral (def 1).
- washington's birthday — February 22, formerly observed as a legal holiday in most states of the U.S. in honor of the birth of George Washington.
- well-ordering theorem — the theorem of set theory that every set can be made a well-ordered set.
- whip-and-tongue graft — a graft prepared by cutting both the scion and the stock in a sloping direction and inserting a tongue in the scion into a slit in the stock.
- white-crowned sparrow — a North American sparrow, Zonotrichia leucophrys, having black and white stripes on the head.
- wildlife photographer — someone that specializes in taking photographs of wild animals, especially in their natural habitats, and plants
- with one's bare hands — If someone does something with their bare hands, they do it without using any weapons or tools.
- yellow-throated vireo — an olive-green vireo, Vireo flavifrons, of eastern North America, having a bright yellow throat and breast.