SYN: Approach, resemble, border, abut, near, trench.
ANT: Separate, differ, vary, recede, diverge, deviate.
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KEY: Appurtenant.
SYN: Belonging, connected, appropriate, appended, homogeneous, attached, co-ordinate, concomitant.
ANT: Unconnected, disconnected, Inappropriate, detached, isolated, incongruous, unallied, unrelated, independent, heterogeneous.
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KEY: Apt.
SYN: Fit, apposite, clever, meet, liable, becoming, appropriate, ready, fitting, suitable, pertinent, qualified, prompt, adapted, likely.
ANT: Unfitted, ill-timed, awkward, unlikely, inapt.