词根词缀：acerb-, acerbo-; acri-, acrid-

【来源及含义】Latin: bitter, sharp, sour, stinging

【相关描述】Formed from a blend of Latin acer- (feminine acris, neuter acre) which are both related to Latin acus, "needle"; acies, "sharp edge, point, the front of an army, line of battle, battle array"; and acuere, "to sharpen".

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": aceto-; acid-; acies- (not "sour"); acuto- (not "sour"); oxy-; pung- (not "sour").

【同源单词】acerbate, acerbic, acerbity, acerbophobia, acerophobia, acerose

词根词缀：acid-, acidi-, acido-, -acidity

【来源及含义】Latin: sour [sharp]

【相关词根词缀】 Cross references of word families that are related directly, or indirectly, to: "sour, sharp": acerb-; acies- (not "sour"); acuto- (not "sour"); oxy-; pung- (not "sour").

【同源单词】acid, acid rain, acid test, acidalbumin, acidaminuria, acidemia

词根词缀：-ous, -ious, -eous

【来源及含义】Latin: full of or having the qualities of; in chemistry, a suffix denoting that the element indicated by the name bearing it, has a valence lower than that denoted by the termination -ic; as, nitrous, sulphurous, etc., as contrasted with nitric, sulphuric, etc.

【相关描述】Only a small number of the hundreds of examples are presented because there are just too many to include at this time.

【同源单词】abdominous, abiogenous, ablepharous, abstemious, acanthaceous, acanthocephalous

词根词缀：-ulous, -ulously

【来源及含义】Latin: a suffix; tending to do, inclined to; full of

【同源单词】acidulous, bibulous, cavernulous, circumnebulous, credible, credulous