Some of there physical antics are downright athletic, and I want to mention their indefatigable energy and focus.
He was, however, best known as a learned and indefatigable botanist, especially in medical botany.
Duncan took up the matter, and through his indefatigable efforts a public meeting was held in 1881.
Leader exhibited three paintings at the RA in 1922, at the age of ninety-one years, an indefatigable worker to the last.
We have been tremendously helped in this by the indefatigable work of our Secretary, Professor Robin Cameron.
CPRE 's planning co-ordinator in Chester is the seemingly indefatigable anti-car campaigner Ann Jones.
Although noted for her apparently indefatigable personality, closer reading of the auto/biographical material on Guggenheim also reveals her emotional weaknesses.
For all its meticulous scholarship and indefatigable research, Smiths commendable study exhibits some relatively condonable shortcomings.
He wrote inter alia: No praise can be too high for his [Irving 's] indefatigable scholarly industry.
Most of the time Indefatigable was off Ushant looking for French corvettes sent out to harry British ships.