Possible Clues:

• Take to be the case, without proof
• Take it
• Feign problem in sea, swimming
• Reckon like tot finishing with toe
• Adopt a son, setting up fast birds from down under
• Take on, as an identity
• Take to be true
• Suppose example won't begin to contain problem?
• Wear — don
• "__ a virtue, if you have it not": Hamlet