满口称赞

• 氵(water; liquid)RADICAL
• 艹(grass; plant)ASSOCIATIVE
• 两(sea; ocean)PHONETIC

Water rising high to the grass tips means it is full and overflowing.

• 口(mouth; opening)ASSOCIATIVE

The character 口 is drawn as an open mouth shape for speaking or eating.

• 禾(rice plant; grain stalk)RADICAL
• 尔(you)PHONETIC

A rice plant being weighed and measured gives it a name, thus meaning "to address" or "to call by name."