inflect

动词 inflect:

1. change the form of a word in accordance as required by the grammatical rules of the language
2. vary the pitch of one's speech
   同义词：tone, modulate

1. By inflecting the voice more one can hold the attention of an audience.
   讲话声音有些抑扬变化可以吸引住听众的注意力。
2. Most English verbs are inflected with `-ed' in the past tense.
   英语大多数动词过去式词尾均变化为-ed的形式。

in.flect

v.（动词）
in.flect.ed,in.flect.ing,in.flects
v.tr.（及物动词）
To alter (the voice) in tone or pitch; modulate.
变音：在音高和音调上变化；转调
Grammar To alter (a word) by inflection.
【语法】 变化字尾：通过词尾变化改变（一词）
To turn from a course or a specified alignment; bend.
弯曲：从一路线或特定的队列上的发生偏转；弯曲
v.intr.Grammar （不及物动词）【语法】
To be modified by inflection.
以词尾变化改变
To give all of the inflected forms of a word; to provide a paradigm.
词形变化形式：给出一个单词所有的屈折变化形式；提供词形变化表

来源：
Middle English inflecten [to bend down]
中古英语 inflecten [弯下]
from Latin onflectere
源自 拉丁语 onflectere
in- [in] * see in- 2
in- [在] *参见 in-2
flectere [to bend]
flectere [弯曲]

【引伸】
inflec.tive
adj.（形容词）
inflec.tor
n.（名词）