"unwieldy event" is a correct and usable phrase in written English
You can use it to describe something that is difficult to handle or manage. For example: "The party planning committee was overwhelmed by the unwieldy event."
In an unwieldy time frame, events are confusing.
The organizers decided that this event risked becoming unwieldy, because so many revenge-seeking New Yorkers would have wanted to enter it.
Mrs. Clinton's campaign events, while still unwieldy by the standards of a normal New York state race, no longer have the overwhelming feeling of a full-scale spectacle, with chattering television crews from across the world competing with Washington-based network correspondents for the chance to ask the first lady a question.
But the simple narrative that prosecutors tried to establish of two ruthless mobsters who repeatedly killed those who got in their way may have been complicated by the unwieldy nature of a racketeering case that drew on a series of events that occurred over a 17-year period and that relied heavily on the testimony of witnesses with lengthy police records.
"He had taken this unwieldy story that was based on real events and turned it into a coherent three-act story," Mr. Affleck said, as he made his way toward his table.
Longer suppressors are more unwieldy, but may increase dampening effect.
Over the years the annual event has drawn upwards of 100,000 participants and has become so unwieldy that some have dismissed it as little more than a feel-good talk session or a left-wing carnival.
The once unwieldy New York part has been trimmed a bit, making way for more free and outdoor events than in previous years.
But even as his organization splinters into sometimes-unwieldy regional franchises, and global events unfold not as he would like, Mr. Zawahri still bears authority in a movement to which he has been committed for more than three decades.
