It's a particularly immature form of protest, and it wasn't something I was going to stand for.

Thanks to him, a defiantly immature form has finally grown up.

The adults eat little, if at all, and the immature forms, which suck juices from small roots, have never been known to kill anything.

The plant may be difficult to identify if not in its mature form; the two immature forms look very different.

This immature form is a protective stage, able to viciously defend itself from birth.

The spiders hibernated through the winter in an immature form and reached sexual maturity around late April.

These are primarily the immature forms of insects that live on land as adults.

They are frequently observed to form aggregations, especially as immature forms, with from tens to perhaps a hundred individuals.

The immature form has to eat to survive; they're driven to take whatever's handy.

The immature forms of these ticks are very small and may be hard to see.