Yes, toughly is the adverb form of the adjective tough. It means in a tough, or determined manner.
gruffly, muffly, toughly (is that a word?), if you need help for words you should look at the rhyming dictionary online
bran
Fibrous root
It is a Very strong Security system . the commando or trend very toughly
The fibrous tissue that encloses and separates layers of muscles.
Fibrous
Celery is fibrous.
It is a Very strong Security system . the commando or trend very toughly
Fibrous
fibrous
cereals are mostly monocotyledons, so fibrous root system.