incapable of or resistant to bending; "a rigid strip of metal"; "a table made of rigid plastic"; "a palace guardsman stiff as a poker"; "stiff hair"; "a stiff neck"
designating an airship or dirigible having a form maintained by a stiff unyielding frame or structure
characterized by forceful and energetic action or activity; "a vigorous hiker"; "gave her skirt a vigorous shake"; "a vigorous campaign"; "a vigorous foreign policy"; "vigorous opposition to the war"
strong and active physically or mentally; "a vigorous old man who spent half of his day on horseback"- W.H.Hudson
exist over a prolonged period of time; "The bad weather continued for two more weeks"
continue talking; "I know it's hard," he continued, "but there is no choice"; "carry on--pretend we are not in the room"
keep or maintain in unaltered condition; cause to remain or last; "preserve the peace in the family"; "continue the family tradition"; "Carry on the old traditions"
continue a certain state, condition, or activity; "Keep on working!"; "We continued to work into the night"; "Keep smiling"; "We went on working until well past midnight"
continue after an interruption; "The demonstration continued after a break for lunch"
do something repeatedly and showing no intention to stop; "We continued our research into the cause of the illness"; "The landlord persists in asking us to move"
observe, check out, and look over carefully or inspect; "The customs agent examined the baggage"; "I must see your passport before you can enter the country"
not changeable or subject to change; "a fixed and unchangeable part of the germ plasm"-Ashley Montagu; "the unchangeable seasons"; "one of the unchangeable facts of life"
follow a certain course; "The inauguration went well"; "how did your interview go?"
move ahead; travel onward in time or space; "We proceeded towards Washington"; "She continued in the direction of the hills"; "We are moving ahead in time now"