Possible Clues:

• 'That works'
• "We can work with that"
• 'Better than nothing'
• Tepid response to "How's this?"
• "That's good enough"
• Unenthusiastic endorsement
• 'I can get by with that'
• "Not perfect, but I can deal"
• "I can live with that"
• 'That's adequate'