Inappropriate to or unbefitting a man; beneath the standards of behaviour expected of a man; dishonourable, shameful, ungentlemanly.

Unlike or uncharacteristic of a man (especially as opposed to a woman or child), or of a human being (as opposed to an animal, supernatural being, etc.).

Lacking qualities traditionally associated with men, such as courage, fortitude, self-control, etc.; characterized by weakness or timidity; unmasculine, effeminate.

In an unmanly manner; unmanfully; (also) in a manner untypical of a human being (as opposed to an animal).