similar to an amoeba. An amoeba can constantly change shape by the protrusion and retraction of pseudopodia

Like an amoeba with the ability to move or change shape by protoplasmic flow using pseudopodia, engulfing food by ingestion (phagocytosis), and possessing a contractile vacuole.

like an amoeba (especially in having a variable irregular shape)

Amoeboids are cells that move or feed by means of temporary projections, called pseudopods (false feet). They have appeared in a number of different groups. Some cells in multicellular animals may be amoeboid, for instance our white blood cells, which consume pathogens.