"unsuitable behaviour" is a correct and usable phrase in written English.
You can use it when referring to behaviour that is inappropriate for the situation or that goes against expected norms. For example, "I was shocked by the unsuitable behaviour displayed by some of the guests at the wedding."
Serbia has now formed a National Council for the Prevention of Violence and Unsuitable Behaviour at Sports Events, which will be chaired by Dačić and the first deputy prime minister.
The hope for "every child to be a wanted child" is of course best achieved by some women not getting pregnant in the first place, but whatever role a baby is going to play it should surely not be that of a punishment for its mother's "unsuitable behaviour".
7. The BBC reserves the right to take any contestant off-air and disqualify them from the quiz at any time if they display offensive, abusive or any other kind of unsuitable behaviour.
If this behaviour is unsuitable in a specific case, developers may implement salt and solvate handling functionality in the preSave method.
However, they require administration in controlled conditions, and prior knowledge of likely cues to habitual behaviour, making them unsuitable for the self-administered survey study designs that dominate the habit literature.
Though Lindgren won prizes for inventing Pippi, moralists raised objections, arguing that her behaviour made her an unsuitable role model.
We reasoned that startle-induced negative geotaxis assay might be unsuitable to detect alterations in voluntary behaviour.
This may indicate that the present design may not be useful to reflect true exploratory behaviour, and thus may be unsuitable to detect differences in personality, such as boldness.
The top two potential triggers, "unpleasant verbal communication in front of others" and "unsuitable clothes in front of others" are behaviours that, in the Iranian context, are likely to put down the male partner in front of others [ 33].
A third said the dining room at their school was unsuitable, and 56% said they had seen pupil behaviour deteriorate after eating food with a high fat or sugar content.
Aggression and/or refusal to participate in treatment could be interpreted as 'lack of engagement', resulting in the patient being perceived as unsuitable for rehabilitation or berated by staff for 'inappropriate' behaviour.
