Choose the appropriate word which can be substituted for the given sentence: An expression of mild disapproval.

Choose the appropriate word which can be substituted for the given sentence: An object or something that is perceptible by touch.

Choose the appropriate word which can be substituted for the given sentence: 'One absorbed in his own thoughts and feelings rather than in things outside'.

Choose the appropriate word which can be substituted for the given sentence: $A$ light sailing boat built specially for racing.

Choose the appropriate word which can be substituted for the given sentence: 'Different words with the same meaning'.

Choose the appropriate word which can be substituted for the given sentence: 'Detailed plan of a journey'.