Related Clues:

• ''No __!'' (''Happy to do it!'')
• Hard work, informally
• Worry, so to speak
• Salty fluid secreted by glands
• ''No __!'' (''Glad to do it'')
• Exerciser's moisture
• Part of Churchill's offer
• 'No ___' (reassuring words)
• Sign of a struggle
• SAT item
• Difficulty, informally
• Workout output
• Fail to conceal one's worry
• Hitch as investigation incomplete
• It's hard work in this weather!